You’re Aliza!

Aliza, a human girl who was raised and experimented on in a lab all her life, was a fearful and lonely girl.

Sans, or better known as Horror, was a psychopathic and a cannibal, who was a skeleton who lived in the Underground with his younger but taller brother, Papyrus.

When Aliza escaped and ran to Mt. Ebott, she fell down the hole and she met Flowey, a kind flower who wished to help her.

But then, she met… Toriel, a mentally ill woman who was kind but extremely psychotic and possessive.

Aliza was reminded of the doctors at the lab whenever she looked at Toriel’s kind but unsettling smile.

However, when Aliza wanted to leave so she can leave and escape the Underground, Toriel gave her food but she poisoned it, making Aliza’s physical health weaken.

But even so, Aliza managed to leave, but when she met Horror, it was frightful.

Horror had rapid mood swings, but whenever he was around her, he became possessive and extremely overprotective of her, and only allowed his brother to be near her.

However, Horror enjoyed making Aliza uncomfortable, by physically and mentally torturing her, making her behave like an obedient pet. It was toxic.

Papyrus knew of it, but he knew that the 7 years of starvation and gore had really messed up his brother.

Everyone in the Underground were cannibals which only made Aliza a target, being the only human that is.

After maybe a month of living with the two skeleton brothers, Horror got into this toxic but somewhat loving relationship with Aliza.

But, Horror never would let Aliza go outside, and whenever he was out, he would get Papyrus to watch over her, and Papyrus would tell him if she misbehaved, to which she would be punished.

One day, Horror was outside again, and Papyrus was making some spaghetti with human-meatballs.

Aliza was in the living room, watching a show Papyrus put on for her while he cooked, which was called ‘Mettaton’s Cannibal Cooking Show’…