I just checked raws up to 7ch - it's cute, mainly romance. Can't say it's unique and even the whole vtube thingy is taken rather lightly but it's enjoyable enough.
Kind of wondering what happened to mc's ex (if you can even call her that) - she was named at the "accidental stream" and i'm guessing she's not having best time of her life in school anymore; the thing is that mc is dropped from school (probably?) and his only connection to it is childhood friend.
Also it's harem - there's already 3 love interests and there will be even more female characters later - if anyone wondering it's sister (she's not blood-related), childhood friend and pianist vtuber for now.