Title: UnderMind: An Undertale AU

Disclaimers: I do not own Undertale, but I DO own UnderMind. Please do not use my AU version of the characters without my permission. BratTale is set in a WorldView setting like MommaCQ, so, I want to give credit to AlainaPrana, who owns MommaCQ.

Sugar and Sour are Co-owned by AlainaPrana and Alannahablar

Original Asy and Furg/Star belong to Furgemancs

Notes: I started this AU idea being influenced by Big Brothers Big Sisters of America. They match kids with young adult mentors. Four times a month, they hang out together doing anything from studying to playing sports. This program lowered the possible drug use and possible chance of jail time for a lot of kids, allowing them to have a better future! I wholeheartedly support them! Also, Undyne's fraterity is in no way a nod to monster university. just a coincidence. Also, as requested by Sugar's owner, he will not be making any appearances.

Song Choice: Various ones

Summary: Following lunch, Cooler is watching as Gaster is putting away all the old files to his wife and son's investigation. Papyrus wants to know why his father is giving up. Cooler's health takes a turn for the worse. Can Alyssa save him in time?

"Regular Talk"

'Thoughts'

phone calls, texts, sign language, and journal entries

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Cooler's POV

I watch as Gas-Father puts away the files from that night into a cardboard box marked closed. "I never imagined that this would actually happen. " Gaster says and I nod. "Some things are such a big part of our lives that things seem strange without them." I say and Father nods. "I am glad you have enough of your memory to call me Father again...It was difficult" He says and I nod. "Took a while for the memory to surface, but I am glad too." I say. Father continues to work in silence for a while. After about an hour, there's a knock at the office door. "Enter." Father says and Papyrus comes in. "Ah, Papyrus, it is getting late. Shouldn't you be getting to bed?" Father asks looking at him. "Father...are you sick?" Papyrus asks concerned. Father looks confused a moment. "Why would you think that, son?" He says, stopping for a moment.

"You've stopped working on the investigation for some time, and now you're storing away your files." Papyrus says. Father sighs rubbing his forehead. "I'm fine, Papyrus. It's just time to let it rest." Father says. Papyrus frowns a little. "You've given up, haven't you? After all this time...Why now?" Papyrus asks sounding upset. Father looks at me and I nod. Papyrus looks from him to me. "Papyrus, I found Santious" Father says. Papyrus looks surprised and then hopeful. "Y-you did? Is he alright?" Papyrus says crying a little. "I'm fine, Pappy...other then not remembering much" I say making him jump in surprise. He looks at me a moment and starts to laugh. I frown. "What?" I ask. "It's very obvious now that I think about it. I mean, you're the right age. You have the same allergies and health problems. Even some of your behaviors are the same. What I don't understand is why didn't you tell me sooner?" Papyrus asks sounding hurt.

"We weren't entirely sure. We didn't want to get your hopes up and hurt your relationship with Cooler if he wasn't Santious." Father says and paps nods. "I guess that makes sense." He says. "However, don't try to force Santious to remember, Papyrus. these things take time." Father says and he nods. "I may remember everything, or I may not. It's not exactly clear cut." I say and he nods, giving me a hug. I chuckle hugging him back. "Oh! Be right back!" Papyrus says and runs out of the office. I look at Father and he shrugs. "I hope we did the right thing telling him." I say and Father nods. Papyrus soon returns holding something white and fuzzy. "Paps, is that?" I say and he nods. He hands it to me. It's a battered, but intact Gasty. I smile, my hand running over the soft fabric. "I thought you should have it back." Papyrus says and I nod.

My hand soon comes across an opening behind Gasty's spines. Sticking my hand inside, I feel something inside the plushie. I frown. "Papyrus, did you put something in it?" I ask. Papyrus looks confused. "No, I didn't even know it had a pocket" he says. "Whatever it is, must have been there since you put it there, Sans." Father says and I nod. Grabbing the item, I pull it out to find out its a book of some kind. "A book?" I say putting Gasty down. I open it to the first page to see a child's handwriting. Day one, Mother says that boys can have diaries too. She said they were called Journals. So, I asked if I could have one. It made her smile a little and she hugged me. Mother said I need to find somewhere safe and hidden for my journal. Somewhere no one would think to look. So, I am going to put it in Gasty. Father is busy with work this week. So, mother and I are going to have fun drawing and playing in the park. Father works really hard...mother says that he catches bad people that hurt others, the real monsters, not the one in my closet. I went to watch Father work in his office earlier. He didn't like it because he said the pictures were not something I should see. Mother had a surprise for us too. She said that there was going to be a new arrival and Father hugged her, whirling her around. What does new arrival mean? It must be good since mother and father are both so happy. I read the first page aloud.

Father smiles softly. "I...I remember writing this..." I say and Papyrus smiles big. "Really?" He asks and I nod. Closing it, I rub my forehead, a headche started to make itself known. "I don't think I should try reading it all right away. My head is killing me" I say and they nod. "Who was the new arrival?" Papyrus asks. Father chuckles. "It was you, Papyrus. Sans started the journal the day we found out your mother was expecting you" Father says making Papyrus smile. "I think I need to lay down..." I say weakly. Father suddenly looks concerned. "Sans, what's wrong, son?" He says coming over to me. "My-my soul hurts..." I frowns. "Remembering so much today must have stressed your soul too much. Let's get you to bed. Papyrus, can you call Alyssa? She'll be able to stablize Sans's soul again." Father says pushing the wheelchair to my room.

Alyssa's POV

I'm at home in my Masic aka human form eating dinner with my adopted father, Asy when I get a phone call. Dad frowns a little. "Alyssa, what did we say about phones at the table?" He says. "Sorry, it may be Gaster. Cooler's soul is very weak right now." I say and he nods. I answer the phone. "Hello?" I say. Hello? Alyssa? I hear Papyrus say. "Yeah, it's me, Papyrus. What's going on?" I ask getting worried. Gaster wouldn't call or have Papyrus call this late if it wasn't important. It's Santious...his soul...he says it hurts pretty bad. Father is sitting with him, but he doesn't look too good. Can you make it? Papyrus asks sounding scared. 'So, he knows now. Makes things easier' I think. "Ok, here's what I need you to do, Papyrus. Do you remember that cd I gave Gaster some time back?" I ask. I..I think so. He says. "You need to play track three on that cd. The frequency of that specific track will help keep his soul stable until I get there" I say grabbing my coat.

Ok, track three. I think I can do that. Alyssa, please hurry...I can't lose him again Papyrus says before hanging up. "Alyssa, what's going on?" Dad says worried. "Something has seriously stressed Cooler's soul. His soul's balance is off-kilter. If I don't hurry, his soul will fade." I say pulling on my coat. Dad frowns. "Then, I'm driving. You need to get there in a hurry." He says grabbing his coat as well. We get in the truck and dad speeds off to the Gaster residence. About halfway, we get pulled over by an officer. My hair and eyes go white in a panic. "Sir, do you know how fast you were going?" The officer asks. "With all due respect, sir, yes, but that's not my biggest concern right now." Dad says making the officer frown.

"And why is that?" He asks. "Sir" I say and he looks at me. "I just received a phone call from Investigator Gaster's son, Papyrus. Gaster's eldest, Santious is experiencing extreme soul fluxuations. Before you say Santious is dead, the hospital has a DNA test proving that Sans AKA Cooler is in fact, Santious. I am the only soul healer in this city. Every moment we waste could mean Santious's life." I say. The officer nods. "Then, I apologize for the hold-up. If you'd ride with me, I can get you there faster, miss" He says. I nod. "Dad, I'll meet you there. Stay safe" I say and go to get in the squad car.

True to his word, we arrive at Gaster's home in record time. I grab my bag and rush inside. The Officer follows, probably to varify my story. I soon enter Cooler's room. "Alyssa, thank goodness you made it." Gaster says and I come over. "Gaster, I know you don't want to, but I need you and Papyrus to wait outside the house. I cannot risk my magic affecting your souls as well. It could harm you." I say and he nods. "Gaster sir, so, you did call on the girl?" The officer asks and he nods. "We must exit the house. Soul magic is very delicate business. Alyssa needs to focus on my son's soul frequency, but will be unable to with us too close." Gaster explains as they leave. Once I am sure that everyone is at a safe distance, I listen for Cooler's soul. I can barely hear it. It's so quiet...not a good sign.

Gently pulling Cooler's soul, I hold it and let out a whistle. The frequency is specific to the soul I'm strengthening. At first, the soul seems to fight my magic until it recognizes me. Then, it slowly starts to grow strong again. I flinch as Ice crystals start to form on my hands. I figured this might happen, and will deal with it after Cooler is stable again. After a few moments, my hands are numb and I can finally stop. I gently place Cooler's soul back into his body and he starts to rest easier. Trying to avoid using my hands, I use a pen and my mouth to dial Gaster's number. Alyssa? Is everything alright in there? Gaster asks concerned. I drop the pen. "Santious is stable again, but...I...I need help. I can't feel my hands" I say and Gaster hangs up. I soon hear the door swing open as Gaster runs into the room.

My Dad follows Gaster in. "Alyssa, are you alright?" Dad asks. "I-I think my hands have frostbite..." I say. Gaster frowns. "How did this happen?" He asks leading me away from Cooler's room. "I have to literally hold the soul to strengthen it. Cooler's magic is Ice..." I say and Gaster nods. "So, you managed to save Cooler, but you may lose your hands?" My dad says. "No, it doesn't look that bad. However, she will need to go to the hospital. Can you watch over Sans For me?" Gaster asks my Dad. "Of course" He says. Gaster rushes me to the hospital. I flinch a little in pain as they treat my hands for frostbite. "Alyssa, how did this even happen?" the doctor asks. Now, I know what you are thinking. Yes, I am a soul specialist. I got that title early on. "She was saving my son's life." Gaster says.

"Oh, that makes sense now. His magic is Ice, correct?" The doctor asks and Gaster nods. "...We failed to prepare her for skeleton souls. Alyssa, from now on, always be in your skeleton form when healing a soul. Skeleton bodies are far more able to cope with extreme conditions than Masics are." He says as he heals my hands. "You are very lucky the frostbite did not get that deep. Any deeper, and We would have to have had to do surgery" He says and I nod. Gaster sighs in relief. "How is your son doing?" He asks Gaster. "Sleeping soundly when we left him with Alyssa's father." Gaster says and he nods. "Whatever caused the fluxuations should be resolved by morning. That's how Alyssa's magic works. It strengthens and repairs." He says. "So...my son may remember his past?" Gaster asks. "It's entirely possible. Alyssa, how did the soul look?" He asks.

"Beforehand, it had several healed cracks and one fresh one. Afterwards, they had healed entirely." I say. The doctor nods. "Then, his soul should be able to fuction as it normally should. Souls hold our memories and very being. Our brains just translate it for us." He says. We nod. "For the next couple days, no running water unless someone checks the temperature for you first. The nerves are still a bit raw, and numb. This will heal with rest." He says and we soon leave. I'm wearing thin gloves to protect my skin until the nerves fully heal. "I truly am sorry, Alyssa" Gaster says and I wave him off. "That's medicine for you. The unexpected tends to happen" I say and he nods. "At least the damage was minimal" He says and I nod.

Cooler's POV

I wake up in my room. 'Wasn't I in Father's office?' I think. My eyes wander, landing on a very familar Skeleton. "H-hey Asy" I say, my voice harsh from my dry throat. He smiles a little. "Hey kid. Feeling any better?" He asks getting me a drink of water. I nod after taking a drink of water. "Yeah...what are you doing here?" I ask. Asy rubs his head. "Well, Alyssa is my daughter. She had to come pull your soul from fading." He says. I look at him shocked. "Ok...I have so many questions now." I say. "First one is probably how Alyssa's my daughter. *I nod* After I was released from...there, I saw her as I was leaving. She had no one, and the hospital only looked after her because of her magical prowess. No one would get near her. They said she was a monster, a killer, and a freak of nature. Well, that got me mad. She was just a child. She didn't deserve to be treated like that." He says and I nod.

"Well, after a long court battle, I was allowed to adopt Alyssa as long as she continued her training as a healer. She was scared at first." He says. "I know...she told me about her parents." I say surprising him. "Perhaps, she is healing at least a little then. Well, the first thing my adopted sister, Furg and I noticed was that the color white terrifies her. In her skeleton form, white is her full on panic color." Asy says. "But she wears white." I say. He nods. "She didn't always. A small amount like what she normally wears, doesn't bother her. It's a completely white outfit or room that will make her break down. From what I understand, her parents dressed her in a white medical gown her whole life and kept her in a white walled room. The hospital didn't help matters much when they got her. She was free from the pain, but not the white walls." He says.

"Don't they know that only hurts a damaged soul more? I'm surprised she didn't go insane." I say and he nods. "As am I, but she's stronger than most her age." Asy says and I nod. "I don't think I would be able to survive the horrors she went through." I say and he nods. "Speaking of Alyssa, where is she?" I ask and Asy frowns. "At the hospital" He says and I automatically worry. "What happened?" I ask. Asy rubs his head. "Before I tell you, know that this wasn't your fault. The blame falls on the ones that trained her. Alyssa wasn't prepared for your Ice magic when she strengthened your soul. It caused frostbite in her hands. Your Father, Gaster, just called before you woke up. She'll be fine. So don't you go blaming yourself, Sans." Asy says and I nod sadly. "They failed to warn her to be in her skeleton form when healing skeleton souls. Masic forms are more fragile to heat and cold then skeleton forms. Luckily, the damage wasn't bad enough to warrent surgery. They were able to have a healer heal her hands. However, the nerves in her hands will be raw for a few days. So, she has to wear a pair of thin gloves to protect her skin." Asy says and I nod.

Alyssa's POV

We hear voices as Gaster and I enter the house. "Sans must be awake." I say and Gaster nods. I follow him to Cooler's room. "How are you feelling, Sans?" Gaster asks Cooler concerned. "Head still hurts a bit, but my soul feels better than ever." Cooler says and looks at me. "Aly...Sleet, I..." He says, rubbing his head. "Gaster, Dad, can we have some time to talk?" I ask them. They nod and leave the room. I sit down beside Cooler's bed. "...Sorry..." Cooler says looking down at his hands. "For what? Cooler, I'm a healer. It's what I do. Most don't understand the risks that healers put themselves at when they work their magic. Many just don't want to see it." I say and take his hands in mine. He sighs. "Can you explain it to me then? Maybe...maybe if I understood, I will feel less guilty about this whole mess." He says and I nod.

"As far as anyone knows, one has to have the ability to use green magic, but that's only the half of it. The healer must also have a strong soul..." I say and Cooler looks at me. "When a healer...well, heals, they are giving a part of themselves. This is especially true for those with soul magic like me. There's not many like me...in fact...I'm the only one. The one that trained me...they passed away trying to recall a soul. That's the biggest rule soul magic users have. Never try to recall a dead soul. For if you do, the dead will make you fall with it" I say and he nods. "So, you're saying that when you made my soul stronger..." Cooler trails off. "My own was getting weaker. It's an exchange...Soul Healers have to be able to withstand whatever could be thrown at them, but also know when to give up fighting to save someone." I say and he nods.

I play with a whisp of my smoke hair, its color a mellow yellow. "Soul healers have to undergo months of intense Soul therapy and training. It's...very lonely, but we're also encouraged to learn how to play an instrument. It helps develop focus" I say and Cooler smiles. "What do you play? I bet something classy" He says making me giggle. "I play the violin. It was actually easier to learn than I thought." I say and he nods. "Maybe someday, I can hear you play" He says and I blush. "Maybe...I don't really like doing it for an audience, but I could make an exception for you, love" I say and he smiles. "I'd love that, Aly" He says. "That's not my name" I say and Cooler chuckles. "Neither is Cooler or Sans mine." He points out. "You're going to insist, aren't you?" I ask. "You bet" He says.

Time Skip-One year Cooler's POV

"Ok, Cooler, you're finished. You'll still have that limp, but it's not that noticable" The physical Theraphist says leading me to the exit of the building. I nod and shake his hand. The past year has been both heaven and hell for me, Aly, and our families. Asy died suddenly, causing Aly to become a bit distant for a while. I could only wait for her to come to me. It took a couple months before she started to act like herself again, but I could tell that she lost a small part of herself. She did manage to graduate from college though. That did brighten her mood up again, but now, she was busier than ever. She had to do her residency, and the hospital was as cruel as ever to her. Despite how much she had grown as a person, or how much she learned, there was some that still saw her as a monster.

As for my Father and brother, they've been just as supportive of Aly as they have of me. I guess it's a good thing they already approve of her, because, I do love her. I leave the building to see Aly sitting in my car. Leaning back, she seemed to be deep in thought. I notice the driver's seat is empty and I take it. "You alright, Aly?" I ask making her jump a little. She rights the seat and looks at me. "Yeah, just thinking about things. So much has happened this past year, and I feel like I'm drowning." She says making me look at her. Her hair and eyes are a calm yellow color, which I learned meant she was relaxed. I nod. "I feel the same. So much Sleet, both good and bad in quick succession." I say and take her hands in mine. "We made it through, together, and I really hope we continue to go through life together" I say bringing out a small box.

Alyssa looks at me in surprise, and starts to cry, but her hair and eyes going her happy pink. Dang, I missed seeing that pink on her. I open the box to reveal a modest, but beautiful diamond ring. Alyssa nods, unable to put her answer into words. I smile softly. "This was my Mother's ring, it's been through not only her marrage, but her mother's and her mother's mother. My Father thought you would appreciate an old heirloom more than some giant overpriced rock." I say putting it on aly's finger. "I love it!" She says and practically tackles me in a hug, ending up in my lap. I chuckle and kiss her deeply. When we part from the kiss, we put our foreheads together and I smile. "There's the Alyssa I missed so much. Where has she been hiding?" I joke and she laughs.

Aly returns to her seat, and we get buckled up. It's a quiet, but happy drive to a small resturant we are going to meet up with Father and papyrus. "You ready to face Gaster and Papyrus?" I ask and she nods. We walk into the resturant holding hands. We not only find Gaster and Papyrus waitng, but a crowd of our friends and family. Undyne and Alpys, Asriel and Chara, Furg, Muffet, Toriel and Asgore, and surprisingly, Mettaton. "Oh, look at them sparkle! She must have said yes, Darlings!" Mettaton says with his signature grin. Aly smiles big and shows them the ring, her hair and eyes a brighter pink than normal. They smile and congratulate us as we take our seats. "It's so good to see you both so happy after this past year, My dears" Toriel nods.

"Yeah, that was quite the roller coaster of events" Furg says, smiling for once since Asy passed away. Perhaps, she was healing too. We nod. Aly's hair and eyes stay pink, but are tinted with light blue. I grip her hand a little, making her look at me. "I know, we all miss him. He wouldn't want us to stay sad, but to enjoy life in his stead." I say and she nods with a small smile, the blue going away again. "So, do you punks have a date in mind yet?" Undyne asks. "Undyne! He only just asked her, h-how can they p-possibly already have a date?" Alpys says gently smacking Undyne's arm. Undyne just laughs, making the rest of us laugh as well. "We haven't, but I would like a springtime wedding." Aly says and I nod.

"The garden at home would be a beautiful setting" Father says and Aly nods smiling. I know, I'm letting her make decisions right out of the gate, but I want the wedding to be perfect for her. Besides, as long as she's there, I can care less about the setting or date. We all order our respective meals as the wedding talk continues. "Huh?" I say. Alyssa giggles. "Engaged only a couple hours, and he's already acting the part." Chara jokes, making everyone laugh. "I said, do you know who you want for your best man? I already choose Undyne as my maid of honor." Aly says. I rub my head. "Frost, I was going to pick Undyne." I say and she laughs. "Should have paid attention, punk" Undyne says. I chuckle. "I guess so. I guess, I'll go for the best choice after Undyne and pick Asriel. He did raise me with Chara." I say and he smiles. "I'd be honored, Son." He says and the talk continues through the meal.

Asgore pays for the check and we leave the resturant still talking about the wedding. I smile seeing Alyssa so happy. 'Asy, if you could be here now, it would be even more perfect.' I think as Aly and I go to my car. "So, are you alright with all this?" Aly asks looking at me. "Yeah, As long as you are there, I can care less how the wedding is done. I want nothing but for you to be happy." I say and she smiles. "But I want you happy too, Sans" She says. "Seeing that beautiful pink back in your hair and eyes makes me happy, Alyssa. I missed it." I say buckling up as she does the same. Alyssa then starts to laugh, tears welling in her eyes. "What?" I ask a little worried. "I just realised that we aren't married and I've already seen you naked." She says and I shake my head laughing as I pull out of the parking lot."That is funny, and even funnier is that it was part of your job. Good thing I know you so well. That doesn't sound right." I chuckle and she nods. "Yeah, it doesn't." She says with a big smile. 'I will never tire of seeing that smile' I think as I drive us home.

To be continued

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