I've been reading how the writing for Mutsumi's DID is well done, like how it breaks down what DID is without it being some sort of lecture. Mortis and Mutsumi speak in the headspace, Mortis fronts to protect Mutsumi, and Mortis just overall is a completely different people like being unable to play the guitar and referencing people differently. The way Sakiko's face completely changes after realizing she wasn't speaking to Mutsumi anymore (since Mutsumi doesn't call her Sakiko-chan) was SO GOOD. I got goosebumps with their conversation. Even the argument between them at the hotel room gave me shivers. Kinda sad the translation says "split personality" which I've read from others is a gross misinterpretation for people with DID, but asides from that, the DID theory is pretty much confirmed/canon.
Also some are saying Mortis' crashout isn't 'just a tantrum' but some way of manipulation..... I haven't read into it fully but it seemed like an interesting theory.
Also Uika... UIKA... the woman that you are. I'm personally still theorizing she has BPD, she has a very unstable sense of self-image with the way she copies others especially in the hopes of winning over Sakiko. Copying the half-donuts, copying the crossed fingers... Uika who even ARE you. And the way she even talks to Sakiko, Uika literally wants her world to revolve around Sakiko to the point where it may be unhealthy. Her reaction to finding out Sakiko is concerned with Mustumi, and her disappointment when Mortis calls her out for not being able to protect Sakiko.... oh my god the signs are aligning. I could definitely still be wrong about Uika having BPD, but if it's not BPD I'm sure there is just something more.
Doloris "weaver of lies" Uika who ARE you.
(also if I do say something wrong about these psychiatric diseases please let me know so I can correct myself! it's never my intention to hurt anyone.)
