I honestly don't think there will be a love triangle, Aya just isn't that kind of girl. Like her off-comments about Mitsuki cheating is so real tbf lolol, I think everyone has had that worry at some point in a relationship.
I hope Shu will be okay though, just because you're jealous, that doesn't give you any right to make off-handed comments to Aya like she was doing. I'm sensing some internalized homophobia mayhaps ?? But also is anyone noticing how Aya now has the same haircut as Kanna?? It's giving blue territory soon.
And why can't Mitsuki just go solo !! She already had her name picked out, I really hope she get's the confidence to get back into it. T-T
I completely understand where Aya is coming from, but I also think Mitsuki SHOULD feel angry about her keeping something like a concert a secret! You should never make assumptions! But pushing her trauma away isn't healthy.
Coming from someone who has been in a relationship like this, I understand the frustration of wanting your partner to communicate their feelings. I think all the build up Aya has been feeling has come to its boiling point here, and it's so realistic and upsetting to see. T-T