>>62692251In Matsuri's case it absolutely is her brother. She used to have him and her mother onstream constantly back when she lived with her mother 3 years ago. She once invited him over during dream c club and outright asked him which one he'd fuck. Him being a teenager he got annoyed and told her to leave him alone. She then outright asked him if he was gay or something since she had never seen him show sexual interest in girls which made him fuck off from the stream.
Unfortunately all those streams got privated during the holocaust.