As was said above, Urara Meirochou ep 6 was remarkably gay for an episode that started out with boy talk. The narrative kind of pulls in two opposite directions here--potential partners are assumed to be male, but that's contradicted by how everyone is completely unfazed by the possibility of same-sex relationships. The first half felt like it should have ended with a punchline or handwave that restored the status quo, as usually happens in these shows when the balance comes too close to being disturbed. Instead, it matter-of-factly stated that Nina and Saku belong together and everyone went with it.
Some slightly spoilery reassurances for those who might need them: I think that was the last of the blatant heteronormativity and I'm pretty sure same-sex marriage exists in this universe. As for Koume, you can headcanon her as either bi or gay and in denial, but she's very much into the ladies.
I'm trying to watch BanG Dream but the first few episodes have been a bit rough. Kasumi is an extreme case of the genki main character who drags people into adventures against their will, but I think the show will be more enjoyable once she gets brought back down to Earth (possibly next week?) so I'm holding on for now.