Let Me Tell You A Secret, About A Fathers Love

an Undertale Fanfiction

Authors Note: In this story, it will be a True Pacifist run-through with bits of fighting thrown in. Note, when I mean this, I mean that all monsters in the Underground will not be killed, and that the only killing might be done against the "true evil", which…you'll find out. Oh, and this is a GrillbyxOC fan fic. Expect smut.

Chapter 1: A Day Out Turns Bad

A groan was heard as a man slowly woke up from his sleep. He cleared his bleary eyes and checked his clock next to his bed, which beside it laid a picture of him, his wife and child. He sighed as he saw it was 7 in the morning. It was a Saturday, with a slight chance for snow in the later days from what the weather report said. He sat up, his dog tags jingling around his neck as he sat up. This mans name is Jason Marshall…and this is his story. Jason grumbled as he stood up, walking to the restroom and yawning loudly, and turning on the light, checking out his disheveled hair in the mirror, his five o clock shadow on his face and the slight scar that goes from the top of his right cheek down to the bottom of the cheek. A knife wound from his time in the service. He checked out the rest of himself. The army had been a rough thing to go through. But it had given him the benefit of toning him up, giving him a strong chest and a slight six pack. Ok, it was more of a four pack with two half empty cans on the lower part of his stomach. He checked his eyes to see if they were still bloodshot from last nights nightmare. His blue eyes were shimmering in the bathroom light, bloodshot as they were. He held his face in his hands as he remembers the nightmare. His buddies…his team…he had let them down…and his brain was such an asshole that it reminded him of it almost every other night.

He sighed as he began to clean himself up, scrubbing his face and shaving. He then combed his hair a little, deciding to leave his brown hair in its slight disheveled look. He then quickly got dressed, pulling on a pair of cargo pants, a black t-shirt and grey thin sweatshirt, and finally his hiking boots. Today was the day he was going on a hike with his June bug. His little Frisk. It had been almost…what…10 years since his wife died giving birth to Frisk? That was back when he was only 18 years old, a scared and worried young boy. Now, at 28, two tours of service, 3 medals, and a mechanics job in the works, he could have said his life was good…but it wasn't. He shuddered out a breath as he started to relapse into a memory before he shook his head quickly and got out of the bedroom.

"June bug! Come on little one, its time to get up! Daddy's gonna make some breakfast!"

He chuckled as he heard a tiny grown coming from Frisks room. He chuckled as he said, "Come on June Bug! Its time to get up now, you don't want daddy coming in there and splashing you with water like last time."

Jason had a bit of a southern twang in his voice, but not much. Frisk always giggled when they heard their daddy talk in that funny way when he got happy, angry, or just to make them laugh.

"But daaaaaaadddd….its too early. I still want to sleep," they said, whining a little.

"Come on now June Bug, I'll make your favorite pancakes! The ones with the chocolate chips and peanut butter!"

That did it. Jason saw his little ball of cute rush out their bedroom towards the kitchen, seeing that scruffy head of hair of theirs. "Works every time…" he said to himself, going into the kitchen to work on breakfast. Ten minutes later, he had Frisks pancakes all ready with some peanut butter syrup he home made. Frisk was bouncing with joy as he laid the pancakes in front of them, already tearing into said tasty breakfast when Jason had gone to make his own.

"Eat, youngin. You need to fill up if you're coming on the hike with me today."

Jason had just made himself some tasty fried eggs and coffee, not really planning on being out of the house for very long. He assumed Frisk would get tired after the first mile or so, and want back home.

"But daddy, you know I like hiking with you," Frisk said, stuffing their face full of the sweet pancakes.

Jason chuckled as he ate his eggs and sipped his coffee. "That I do June Bug. Hey listen, once we are done with the hike, how about you and I go get some ice cream downtown?"

Frisk nodded. "Sure daddy! Can I get whatever I want though? Last time you said I couldn't have cookie dough because it was raw! But then I saw you eat cookie dough out of the box when we were making cookies the other day," they said, having a playful frown on their face, trying to look angry.

Jason laughed as he said, "Alright June Bug, we'll get you some ice cream with cookie dough ok?"

Frisk giggled and said, "Thank you daddy!" Jason nodded as he cleaned up and put his dishes away. Frisk was still eating as he went back to his room to get ready for the trip. He had everything he needed for the hike. He then opened his bedside drawer and slowly pulled out his sidearm he kept from his military service. He looked at the polished metal and worn wooden handle. How many times had he put the barrel to his head, wanting to end it all? To finally be with his wife again? He couldn't do it though, not while Frisk kept him sane. He put the gun in his holster which he strapped around his chest. He slid his combat knife into a boot holster, and started to pull on his winter gear for the trek up Mt. Eebott.

To be honest, Jason had never really thought of trekking up there. He had heard the stories of course, but just wrote it off as stupid superstition. He hummed as he got all his things together and got ready by the door, waiting on Frisk.

"Daddy! I'm ready."

He saw Frisk bound out of their room and smile at him. Jason chuckled as he saw what they were wearing. A red jacket with their favorite purple and blue striped sweater.

"Come on June Bug. Lets get driving. We'll be there in an hour ok? We'll park, and then see how high we can hike up, ok?"

Frisk nodded as they followed him out the door, Jason locking it with a click. He checked his phone, seeing it was fully charged, and his iPod which he put in his other pocket. There was no way in hell he was paying almost 700 dollars for a phone with a music player. Drained the battery too quickly. Better to have separate. He got in and put his pack in the back seat of his Ford F150 truck before he got back out and helped Frisk in.

"There we go June Bug. Buckle up and lets see if we can find some cool rocks on the mountain today huh?"

Frisk giggled and said, "Ok daddy!"

Jason smiled a tired smile as he thought to himself, "How in the world did I get so lucky to have such a good kid?"

He smiled as he started up the truck, pulling out of his drive way. He tuned the radio to a country station, knowing how much Frisk liked the music.

The drive was uneventful, Jason humming to the music as they pulled up to the trail that lead up to a safe place where they could hike for the morning. He turned off the truck, looking over at Frisk who had fallen asleep and smiled. These 10 years had gone by so quickly. He was so proud of his little June Bug, doing so well in school and learning such kindness from himself and other people. They were doing so well in school, and he even had some pictures they had drawn stuck to the fridge back at home. He grinned as he remembered back to taking care of that little ball of energy, back when they were only a baby. Even then…Frisk was still so full of energy, so full of…determination to get what they wanted, or to do what they felt was good. He chuckled as he remembered how determined they were when he challenged them to save up twenty dollars to go and buy a video game they wanted. Frisk reminded him of his wife, so full of vigor and determination, having goals for a future… He smiled as he gently shook Frisk awake. "Come on June Bug. Time to go." He chuckled as they whined and said, "Aww…but I was so comfy!" Jason chuckled as he gently helped Frisk out and smiled as he got his hiking backpack on. He had packed them a lunch a piece, perfect for finishing out the hike. He smiled as he started to walk with Frisk up the trail, holding onto their tiny hand.

The hike up to the perfect spot for the impromptu picnic was perfect, there was no other word. He enjoyed the time with Frisk, and enjoyed every minute that they talked or babbled about whatever was on their mind or was trying to talk about something they had seen. Jason hummed as he finally got to their spot. He started to set out the picnic supplies as he looked over at Frisk.

"Don't go too far June Bug. I don't want you getting hurt."

Frisk nodded as they said, "Ok daddy. I'll be safe."

Jason whistled as he got his stuff ready for the picnic. But…for some reason he felt…watched almost. He looked around, seeing nothing. He slowly looked at the surrounding area and didn't see much, but then he saw what looked like a figure behind a tree. He blinked as he thought he saw something…white? A white face?

"DADDY" Frisk yelled, obviously in fear.

Jason leaped up, grabbing his pack and running to where he heard his child.

"Frisk! Where are you!"

He heard crying as he neared what looked like a massive hole. Frisk was hanging off of a branch, trying desperately to hold on as long as they could.

"Daddy help! I'm slipping!"

Jason held his hand out to Frisk, grabbing at their tiny hand. He tried, before he saw them loose their grip and he lunged at Frisk…and they fell. Time seemed to slow as Jason quickly grabbed his child, holding them close to his chest, to protect them from the fall in case the fall killed him. If that happened…Frisk would be safe…and he would be with his wife again. He gave a small smile as he kissed Frisks head, quietly saying, "I have you…"

Then it was black…Jason looked around him, seeing Frisk wasn't in his arms. He panicked, looking around for them. "Frisk! June Bug!" He was scared. He can't have lost them. He can't! He panicked and started to tear up. Goddamnit, he couldn't have lost his child. He lost his wife, he wasn't going to lose Frisk to. He continued to look before he saw that…white face again. It started to get closer to him. He reached for his pistol, but it was not there. The figure approached him slowly. Jason got a better look at the figure. It seemed like a white skull, with a black line leading from one eye up to his skull, and the other line leading down to its mouth. No teeth, and white pin pricks of light for eyes. He was scared, and felt like that creature, it, whatever…should not even be here. He then heard what sounded like beeps and boops, like a computer talking to him. The creature then smiled at him, not evil like, but enough that made Jason say, "Who are you? What are you?"

The creature looked up at him, smiling, as he then heard what sounded like the rushing wind going up to him, and a voice whispering loudly into his ear, "Wake up."

And he did. He opened his eyes, scanning around him to see where he was. He saw light streaming from the large hole they fell into above him. No way he was getting back out that way now. He groaned and held his head, feeling his body for any injuries. "No cuts…legs…arms…ok, I still have everything…what am I laying on?"

He looks down and sees yellow flowers…and not to far away he sees Frisk, laying face down.

His heart stops in his chest, yelling out, "Frisk!"

He runs to his child and picks them up. "Frisk? Frisk! Talk to me. Please! I can't have lost you too…" He heard a grumbling as he saw Frisk open their eyes. "Daddy?"

Jason gasped and held her in a hug. "Daddy stop," the whined, trying to push him away, giggling a little. "I'm fine daddy!'

Jason sighed as he set Frisk down, looking down at them and saying, "You had me worried." He then heard what sounded like a strange giggle. He turned and then saw something that made him question if he really was dead. It was a flower. A flower with a face. That was smiling. A fucking flower with a face and it was smiling at him!

Jason blinked once. Twice. And then said, "Um…hi?"

The flower smiled again. "Howdy! I'm Flowey! Flowey the flower!" Jason seemed to tune out what the flower, it, thing, whatever it was out as it rambled on about how they were down here…and something about souls.

Jason then gasped as he felt a tugging at his chest, looking down to see if something was there. He saw it. Something that was a valentines heart float in front of him. It was a mixture of red, yellow and orange, all swirled together in what looked like a small ball of lava. The flower giggled, it fucking giggled, and said,

"Wow! I've never seen a soul like that before! All the more better to destroy it with," it said in a more demonic voice, tiny white pellets surrounding Jason and Frisk. He looked down and saw Frisk with a determined face, angry, and their own "soul", a pure red heart in front of them. Jason pulled his gun out, aiming at the flower before he heard a swoosh and a ball of fire hit the flower, causing it to recede into the ground. Jason pivoted in place, pointing his gun at the figure. He growled in anger as he yelled, "Who the fuck are you!?" Frisk tugged at their dads pant leg. "Daddy! Language!"

Jason grumbled as he continued to point his gun at the figure as they came into view.

Jason blinked a few more times before he saw it was a goat woman…a tall goat woman that seemed to exude a motherly influence and tone. "Oh my," they said, "Are you ok? I am sorry to have frightened you." Her voice was calm, her hands folded in front of her. Jason lowered his gun, slipping it back into his holster.

"Where am I? Where are we, and why did that flower fu-freaking talk to me," he said, looking at her with an un easy eye.

The female sighed as she looked at Frisk, then at you and said, "You are in the Underground…and you are stuck here…"

Authors note: Ohh boy, what a chapter. And for those of you wondering, he brought the gun in case of wild animal attack. Any comments would be appreciated. And I know I ended it on a sort of foreboding note but, eh. And whats Mr. Gaster doing involved with Jason huh? Who knows. Until next chapter!