Wished I had skipped it. I read the whole manga in Spanish and the story (ending) is very bad ╮( ̄▽ ̄)╭ Save your time!
Spoiler (copied from comments)
Tsukuyomi gets the shaft after getting his hopes brought up by Rurikawa and now I'm upset. Like, if you were gonna choose Kyougukuin in the end why tf did you drag Tsukuyomi back when he was trying to leave so he wouldn't get in the way of you two? Everyone is saying how much of a "slut" Tsukuyomi is and fail to realize that the reason why he does what he does is due to the fact that he has all this love for Rurikawa but knows that ultimately they won't end up together. He's actively trying to fill that hole by sleeping with anyone that says they love him and having their kids even if he always out lives them.
The truth is that looks very lame when you find somebody having sex in a classroom. I saw it happen in college, the teacher and my entire class were outside the door and when the teacher opened the classroom it surprised them in the middle. The teacher closed the door immediately but most people saw them and were laughing. It was so awkward seeing the woman and man adjust their clothes running out of the classroom in front of everybody. Don't do it!
I really didn't like when he was attacked in his workplace, it always makes me cringe when something like that happens in a manga. It was so so, I mean, I finished reading it. ╮( ̄▽ ̄)╭