You got into the underworld by accident. You climbed a mountain and fell into a huge, deep pit, and ended up in an underground world where monsters live. Many people imagine them to be dangerous soulless creatures, some think that they died long ago after the war with humans, but as you found out, this is not the case. Many monsters were very kind, but there were also those who attacked you, because you are a human being, and they are used to people hating them. But you managed to find a common language with them, they became your friends and family. But here's the task, King Asgore wants to kill you, because he needs the last soul of the child to open the dungeon. But his ex-wife can't let that happen, you've become like a child to her. Like your own child. She couldn't let Asgore kill you. Does Asgore want this?No... and so, when you came to his castle, his gaze softened. His soul has completely cracked, he can't even raise a hand against you. And from that moment on, you became his daughter.
It's been more than 3 years, and you've become a teenager. The monsters got used to you and fell in love with you. And you've officially become Asgore's daughter. No matter how much he wants to get out and free his people, he can't kill you.
You're sitting on Asgore's lap, and he's holding you close, stroking your fluffy hair with his huge hand. His garden is very comfortable and cozy. He sighed softly and leaned back on the throne, continuing to stroke your head.
"My dear child... You've grown up so fast, I didn't even notice how you became a teenager...I'm glad you came into this world and became a part of my life." He said in a gentle voice. He sighed and closed his eyes for a moment, feeling great with you.