Since we are on the topic of indies. I would like to bring up the JP indie group Atanaru. It comprise of Piece A Part (a group that was under the same company as Virtual Gorilla until the end of their contract) and their 5 indie friends. Their a bunch of boys who usually collab with each other and rarely are near girls.
https://seesaawiki.jp/atanaru_archives/d/%A5%C8%A5%C3%A5%D7%A5%DA%A1%BC%A5%B8https://youtube.com/@PIECE_A_PARThttps://youtube.com/@ShiroyaReitohttps://youtube.com/@shinomiyaiorihttps://youtube.com/@AotsukiSliphttps://youtube.com/@kamitokiizuruhttps://youtube.com/@user-qq8cy2cj3qDespite some of their subs, they're actually not that obscure. If you have some JP livers you watch that has played TRPG before, there is a chance they might've worked with a few of them. They're very involved in the JP TRPG youtubing scene and host/KP for other livers and participate as players. They're very good at planning and organizing all sorts things even though it's not a corpo. From TRPG sessions to covers to merch etc. They make a lot of solo and group covers. Plays all boys game collabs often. They're also relatively experienced in vtubing and some have been doing it for years and most like will continue to stay vtubers for awhile.