Honestly the only good thing about this manga is the art, it's really good.
Now the bad thing it's the rest of it, story, personalities, reason for the characters' actions, it's very predictable. It's going to be milked as long as the axe stays away because this author is just making drama for the sake of it just to put volumes on the market and see if it catches someone's attention and maybe have a chance to be a hit. And we all know how simple is the Japanese brain, they see fanservice or netorare and they'll buy it.
Everything is absurd and the only character that notices it's the tomboy's best friend, girl should stay away from those weirdos, from the twins to the teacher. If you want to kill time and neurons while seeing cute girls, read it.