The note on Souryuu's speech bubble on panel 1's quite fishy, feel free to change it if anyone knows how to translate it better.

Shoukaku: "I don't want to live on this planet any more..."

What do you expect when you have bunch of super pretty hormonal girls living together with no male in sight? Yuri is bound to happen. (incestuous yuri at that...)

When you are surrounded by yuri forest and you are the only one straight(?) ;DDD