Debris/theories

About Tatsuki
One theory is that Tatsuki and Lefia are related. Lefia was the favored child, which is why she appears as a princess. Tatsuki was ignored by their parents and bullied at school, and, seeing no other option, Tatsuki closed themself to their room.

Before closing themself off, Tatsuki was friends with the chaser girl, who verbally abused them. However, Tatsuki did not care at this point due to being neglected by everyone, and wanted to stay with the girl because she was the only one who paid any attention to them. They started to believe all of her harsh words, and referred to themself as "idiot" to appease her. They often fantasized about standing up to her, or even killing her, but never had the strength to do it.

Tatsuki may have self-harm issues, being signified by the scissors they wield. Their one sleeve is rolled up to show off the cuts, hoping that someone will see them and try to help them. There are many reoccurring sharp objects in Tatsuki's dreams, including many references to glass. Maybe they use glass shards to cut themself as well.

Tatsuki's self-hatred is a reccurrence in their dreams as well, shown in the many events where they hurt another version of themself, or dies in some way.