I just happened to stumble upon this interesting series today. I’ll spare making up my own synopsis and just copypasta from the mangaupdates page.

All Yoriko could remember from the night before was the red blood, the red moon and an exceedingly bewitching red eye… The next day during class, being on the verge of remembering leaves her in a sickened state and her classmate Kirin suggests she take a nap in the nurse’s office. When Yoriko arrives she notices nobody is around so she decides to make use of the empty bed. While resting, the absent nurse returns to the office to finish the job she had failed the night before: suck Yoriko clean of blood. In the middle of the struggle, Kirin comes to save poor Yoriko from the demon nurse. Turns out Kirin and her brother Koryu are ‘oni’.

I’ve only read two of the available volumes thus far. This is one weird little manga. Sure, the fact that Yoriko has some magic ability that allows her to be awesome is standard shounen fair.

One of the things that makes this manga nice is the art. The mangaka for this one is Kuromasa Shisei (黒柾 志西). It doesn’t seem like he’s done that much else in terms of manga except for some contributions for Comic Rin. That’s too bad, too, since he has a really interesting art style. He has a way of making the characters look very … disturbed. There’s also a fair amount of fanservice ;)

Oni Gokko is currently being scanslated by NEET Scanslations. So far, they’ve released 22 chapters. You can download them from here.