This turns out badly if you get the default ending, as she quickly starts to go mad with power. Because Monika no longer exists, Sayori gains her Club President role and everything that comes with it.

Came Back Strong: Sayori, as well as Yuri and Natsuki, are resurrected in Act 4.

Sayori is already pretty much broken at the beginning of the story, but it is heavily implied that Monika's jealousy towards her causes her to try to break her even further. Overeating can be a symptom of stress and depression.

Big Eater: It's mentioned during Natsuki's route that the player character should keep the cupcakes away from Sayori so that she won't eat them all before the festival.

This makes sense, as she's in her pajamas.

Barefoot Suicide: She's not wearing shoes when the Player Character finds her dead body hanging from the ceiling.

In the side stories the poem reappears in full, revealing that Sayori wrote it herself and that it is about why she tries so hard to make other people happy.

Ascended Extra: A poem rather than a character in this case - in Sayoris scene from Day 2, she recites part of a poem to the player, the content of which subtly foreshadows her inner conflict.

Sayori: I like you so much that I want to die! That's how I feel! And.

Doki doki lit club monika