Ah, Chelsea. I was hoping somebody would get to her, lol. There's a lot of horror stories on her alone even before this Stinky mess. About a year ago, back when she was relatively normal (see: before she became involved with Stinky, Starry, Kelly, Kellan, and co.), instead of being kin with Karamatsu, she claimed that he was her alter. Osomatsu, too. It was
this tweet in particular that caused her to retract all of her DID/system claims and change Karamatsu to her "kin" instead, after it gained massive traction and caused everyone to bully her for it instead. She had the Glittermatsu username during all of this and called her 'system'
The Sin Star System. Wild. There's also
this shit. Not safe for life.
She wrote a fanfiction on ao3 about Osomatsu having DID and his brothers being his alters, as an allusion to her own fake 'system', but she deleted her entire account before I had the chance to archive. It was called "The Matsu System", though, so hopefully someone archived it before I did.
I have to wonder if Chelsea is a pedophile herself - when I was mutuals with her on my matsu twitter mainly to get dirt on her and her crew, she would always flirt with and have sexual BLmatsu roleplays with a particular user (an Ichimatsu kin, who I think is 15? Maybe 16, I don't know). Chelsea is turning 20 in May. It's no surprise that she's dating Stinkpit, degenerates breed degenerates especially in an anime that's all about them.