Please don't spread nonsense Propaganda on my straight relationship manga, we already have too much of that (and i had enough)
Nobody cares what you don't like, especially if this is how you behave towards strangers. Tastemakers and influencers are typically
pleasant towards other people, besides. You sometimes have to share a community with people who have opinions/likes/interests different than yours. Or even enjoy the same things as you in a way you might not approve of or with their own headcanons etc . I'm sorry if your family and teachers didn't do enough to expose you to that basic level of tolerance.
As to whether is is a straight relationship manga -- I think that's Complicated. Shion is clearly not straight (bi maybe?) given how raw her thirst to bathe with Majeli is. And while I definitely would not jump to any conclusions about Ayame's gender identity, you can't really seriously argue he doesn't interact with her as both genders. Not without literally ignoring the
entirety of the last three chapters. I bet we'll see more of Ayame and Shion interacting in a straight context in future, but girl time bathing is probably first on the docket.
I have good news for you though. If you want a straight relationship manga, you are
unbelievably spoiled for choice without ever to step foot in the Gender Bend district of Manga City. But if you do so, don't be surprised when you encounter people who subvert gender as a lifestyle. I'd suggest learning to get used to their presence because there's nothing else you can do about it. Otherwise it's like walking into a gay pool party with the intent of enjoying a swim and being horrified at seeing lots of men in tight speedos.