Undertale spoilers (and Charles Williams's _Descent into Hell_)
@kara_dreamer@witches.town That's also possible and valid, but it also stands to reason that they want to punish themselves and all humanity, given the Post-Genocide Pacifist Endings. (staying with Toriel grants that creepy epilogue scene with Chara's eyes opening with that smile at the end, and leaving on other business shows the photos with everyone's faces crossed out and Chara's smile and red eyes)