Please I want more, I don't care about romance I just want to see more of them ╥﹏╥

And doesn't this seem kind of rushed as an ending ? Did the author have a problem? I feel like a lot of mysteries (we still don't know why half of them are in S-) and story plots (Rentarou being a girl) are unanswered/unfinished :(

According to another person in the comment section, this manga was cancelled, which is why they rushed the ending.