Thanks for the chapter!
Unfortunately for the MC she's probably going to drink his blood on the sly. Considering he's being pulled in two directions by two girls with superstrength yet isn't torn or bleeding despite being anemic definitely is an indication something weird is going on. Although really needs to stop going by story templates. The templates are there to make things easier for an author to organize and focus their thoughts on who's doing what and when while entertaining the reader. Monsters however, rarely read the script assuming they know how to read and liable to do anything. In any case, bet there's going to be some BL doujins between MC and Ryuuga spreading around the school soon.