Insanity

Your name was Y/n, Y/n L/n. You were 18 years old and lived with your younger sibling, Frisk and your adoptive mother Toriel. You had lived with them after a tragic accident with your family, so Toriel took you in as her own. A few years after you had been living with them things had gotten better, but then took a turn for the worst. You had taken in a patient from the local asylum Toriel and Frisk worked at. After a month or so, things went from awkward to a little psychotic with your guest.