I've been thinking of watching the BanG Dream anime. Is it gud?
It focuses entirely on popipa, with only bit appearances by the other bands. I thought it started off pretty cute, but then Twinkle Twinkle Little Star hits, and the show never really won me back.
It's worth noting that [I'm pretty sure] Chata Maru has gone into more detail about Marisa and Alice's marriage in the MariAli ga Kosodate series. That particular doujin just hasn't been scanlated. In fact, there are a bunch of manga in the series that haven't been translated.
Myonmukyuu's NicoMaki art is pretty rad
Also Nico better be ready for a Night of Fire with Maki later ;)
Would actually love to see a Yuri Initial D crossover or something, would make my week
These kinds of comfortable, flirtatious romances are just too precious. I wish there were more of it. It's hard to pin that sort of story down in a search too.