Well that's the case of Yosuga no Sora, but real deal should be when they're identical twins, they can be still in the oposite gender although it's very rare it seems, should be cute if you are cute as well, should be able to put some good fetishes
You gotta give them a go in irl, see what can be born beween you and yourself female, in manga they are cute sure as well, Yosuga no Sora is there to prove it
Well, you gonna have two answers if it's irl or manga, if it's manga little sister are always cute, in irl big sister is better, you can kinda trust them depending on the relationship, and plus you dont usually have to take care of them, win win
He has his sense of justice, and goes white-knighting even without others noticing, at least being smart when doing it would be great for our hero. All this hatred of iino by him should be because he plays in the school, has bad score in tests and his long hair, he should be for her the example...
She should know this thing because it's some character development, she got played and she didnt knew not even in the end, she will just keep this weak smile until some shit like this happens again. Really even if her world is destroyed, it would be constructed stronger again. Ignorance isnt...
Kei eyes are so pretty, had the same impression that they seem like a black hole, stand out quite a bit, though i dont like her much, really her "rebelious phase" is almost as she always was until now in the manga
Make it sadder, creator shouldnt give up by extern pressure, doesnt make sense to her to be fixed still after such a small time or she didnt change after all, that smile kinda gives me it
Is him talking with the girl outside? Lol, my guy is pushing a bit too hard, idk where it's going to, was hoping it would end wholesomely at least, maybe just put him to have a talk with his sister, telling he loves her but just as a friend and sister, and take that "cliff"hanger idea out of...