Previously: Frisk, Flowey, Deos and Toriel finally arrive at New Home and then to the Throne Room, which leads to a reunion between the two boss monsters, Toriel starts to feel what she once denied and Asgore starts to feel less suicidal. (after putting Deos' theory to the test) Deos then showed them, the divorce / abdication document that Toriel didn't sign due to the pen running out of ink (which she then burns) and after that, Deos called Mettaton, Sans, Papyrus, Muffet, Undyne and Dr. Alphys for their reunion and (after bringing the rest of his Order) for Deos to use his magic on Flowey to bring a load of soul fragments to the one in him, to fulfil his side of their bargain.
(Throne Room)
The light dissipates and Deos moves back to the others of his Order, they can all see the result of this magic, which has shocked all of those who sees this, three are shocked about this most of all: Asgore, Toriel and Dr. Alphys, the reason for this is in the form of a small boss monster wearing a green shirt with long sleeves and yellow stripes and black pants, Asriel Dreemurr was with them once more, he looked at himself and was taking it in what has just happened, he's no longer a (mostly) soulless flower, he's him again, then he remembers his actions as Flowey and started crying, which caused Dr. Alphys cry as well, while hugging Undyne, while Asgore and Toriel rush to hug their son, the son those death resulted in their family being destroyed.
"I WASN'T EXPECTING THIS...PRINCE ASRIEL IS ALIVE ONCE MORE AND HE WAS THAT TALKING FLOWER...THINGS MIGHT BE TOUGH FOR THEM, WORDS CAN'T DESCRIBE HOW I'M FEELING RIGHT NOW..." Mettaton said, quietly.
"I shot..." Toriel said, slightly disgusted with herself for attacking him when he was Flowey with a fireball.
"I couldn't stop myself, Mom...I didn't feel that it was bad...or anything, now that I have a soul again, I can't stop!" Asriel said, with the tears gushing out of his eyes.
"It's all my fault!" Dr. Alphys shouted, her self-hatred was unmistakeable, Toriel looked at Dr. Alphys.
"So you had something to do with this..." Toriel said, with hints of anger in her voice.
"My first e-experiment with Determination was with a f-flower, but when my back was t-turned one day, that flower d-disappeared..." Dr. Alphys said.
Toriel's rage was approaching burning point, but she was stopped by Asriel paw "No Mom, she didn't know...I don't blame her for what happened..." This caused her rage to lessen somewhat.
"I sanctioned her experiments..." Asgore said, with some sadness.
"The irony of this is that if she DIDN'T conduct that experiment on that flower that some of his dust fell on, Asriel would've STAYED dead." Deos said.
"You are all right...any punishment that I could dispense would be nothing compared to what you have done to yourself, Dr. Alphys...I have experience with that..." Toriel said, understanding her position.
"As have I..." Asgore said.
Toriel then put Asriel down, who was then hugged by Frisk "Nice to meet you, Asriel." Frisk said.
"You're forgiving me, even though I've tried to kill you when we first met in the ruins?..." Asriel said, surprised by how friendly Frisk is towards him.
"Why wouldn't I be?" Frisk replied.
"Oh and before you ask, I don't know whether Frisk is a boy or a girl, it's a sensitive subject...so it might be best not to ask about that right now." Deos said.
"Okay..." Asriel said.
"WOWIE, THERE'S A MINI-ASGORE WITH US! I CAN'T WAIT TO COOK SOME OF MY SPAGHETTI FOR HIM!" Papyrus said, excitedly.
"You might want to wait on that a little while longer, he's got a lot to deal with." Sans said.
"Sans..." Asriel said, ashamed of himself for what he did during various resets.
"That's okay, kid, you couldn't feel bad about what you did, even if you wanted to. Now that you have a soul again, it's all coming back at once. Now that I know that you're not gonna do what you did again, I can finally relax around you, I like you better like this, don't ever change back." Sans said, he didn't have anything in this voice that suggested that he had any anger or hate towards Asriel.
"T-thanks..." Asriel said, as he starts to feel better about himself.
"Hey, you needed a re-fur-al." Sans said, causing Toriel to laugh at this.
"SANS! PLEASE REFRAIN FROM THIS, THIS IS SERIOUS!" Papyrus shouted.
"If only that was so..." Deos said, as everyone looked at him.
"Is..." Toriel said, hesitating to ask him.
"Don't worry, Asriel is fine, although as a precaution, you might want to get Dr. Alphys to check up on him, it's Chara...when I brought Asriel's soul back together, I also brought Chara's soul back together...they're linked...they're where you took their corpse...where this all started...although this will take a little longer than Asriel as they'd need to dig themselves out of their own grave." Deos said.
"This dark presence...is it...Chara?" Toriel asked.
"No, they're just the host of this dark presence, a demon that wants to use determination as a means of destroying everything with the unknowing help of Frisk, who would've made constant resets in order to get the "perfect ending", where Asriel doesn't have to be a flower at the end, this wears the walls of reality thin enough for this demon to use Frisk to kill as many in the underground as it can, finishing off with Flowey and then it destroys everything..." Deos explained.
"That's why we're here, we're here to give it a next level exorcism!" Simone said.
"We're glad that he's not taking chances with this, I was surprised that the others were this patient" Neil said.
"I was worrying that you'd need my attention..." Lara said, making Cali slightly jealous, she looked in her direction "not in that way, I know you're taken."
"Some people think that I show too much kindness and should get you examined for any signs of insanity, but we can let you go on this one.
"Okay...got everyone?" Cali asked Deos.
"Yeah...Sans, Mettaton...let's end this." Deos replied.
"I'm coming with you, you're not the only one who has Determination!" Undyne said.
"No Undyne, if you use that, you'll melt" Deos said, with some concern.
"Melt?! What do you mean by that? Explain yourselves!" Toriel said.
"I've got a device that Dr. Alphys put together to make it safer for me to use it." Undyne said.
"I...I had some help with that..." Dr. Alphys said, worryingly.
"You had something to do with this?..." Deos said, with some minor annoyance, while looking at Cali.
"We need all the help we can get, besides...you'd need to beat her unconscious AGAIN just to stop her from going, wasting time and energy that you could be using for what we're dealing with! Short version: it's pointless to change her mind." Cali said.
"Very well...it's time finish this..." Deos said, accepting this.
"IT'S TIME FOR THE FINALE! TAKE US THERE!" Mettaton said.
"Right...Asgore, Toriel, keep Frisk and Asriel out of trouble, you don't want your family to get destroyed again." Deos said.
"I guarantee that we shall" Asgore said.
"Yes, we shall" Toriel said, as she held onto the hand / paw of Frisk and Asriel.
"KEEP MY BROTHER SAFE, I DON'T KNOW WHAT I, THE GREAT PAPYRUS, WOULD DO WITHOUT HIM!" Papyrus shouted.
"I wouldn't be in the position I'm in, if I couldn't keep others safe." Paula said.
"Undyne, don't stay longer than it's safe, I don't know what I'd do if..." Dr. Alphys said nervously.
"You were a good student and a good friend, I felt better when training you, It would be a sad day if you were lost to us..." Asgore said.
"Don't worry, I'll get out of there before the Determination makes me melt." Undyne said, with a pointy smile on her face.
"Sans...that goes for you as well, you helped me through a tough time and I do not want to lose a friend as good as you, well...with one exception..." Toriel said, while looking at Asgore with a look of desire, making him nervous.
"You got it, Tori". Sans said.
"DARLINGS! WE CAN'T KEEP THIS DEMON WAITING!" Mettaton said.
"You're right...everyone..." Deos said, as he charged his magic "hope for our safe return" He, the rest of his Order, Sans, Undyne and Mettaton disappeared.
"Well...this was certainly worth taking a break...now, I'd like to talk about the spiders in the ruins." Muffet said, looking at both Dr. Alphys and Asgore.
(Ruins)
Chara Dreemurr, the first human to fall down into the underground, the adopted child of Asgore and Toriel Dreemurr and adopted sibling of Asriel Dreemurr, lay tired as they rested to get their strength back after digging themselves out of their own grave. They felt that Asriel was also somewhere, they felt a link between them as he once absorbed their soul, the LOVE in them was strong, but they need more destruction to be able to gain vengeance on both races that turned their backs on them, they created a determination fuelled construct of a knife and walked along the path that leads to the rest of the ruins and then walked through the doorway and saw a red cloaked and red masked figure.
"Howdy, the scheduled genocide has been interrupted by this emergency ritual, a psychopath child who like their brother was previously dead and now doesn't care about who they want dead, not knowing that they have a sickness within them, something that tagged along for the ride long ago, before they ended up down here, that which brought out the worst in them and make it worse." Deos said.
"Do you know who I am? What I can do? I won't let anyone stop me! Human, Monster, I don't care who stands in my way, Asriel is mine!" Chara said, with a tone of pure malevolence.
"I know what you plan to do, but the situation is not what it initially appears to be, it's not you who is in the driving seat, you need to be dealt with, if any of us are going to have peace that doesn't involve mass slaughter." Deos said.
"Can't you see how hopeless your situation this is?! There's only one of you, in this world, it's kill or..." Chara said.
"You were a toxic influence on Asriel, you poisoned your father, you destroyed your family and yet you don't see how your actions affected anyone but yourself." Deos said, interrupting Chara with some disgust in his voice.
"I'm bored, time for you to die now" Chara said, indifferently as they charged at Deos...
How will the fight between the combined forces and this demonic presence go? Is there any hope for Chara? What will happen next? Find out in Chapter 29: Rainbow Hexagram