This is the fourth black and blue article. It has been serialized in Tieba. I just recently thought of starting it here.
Mainly red and black, followed by yellow and black, and then ALL black. If nothing unexpected happens in the ending, it should also be red and black.
There are memes about women's clothing, sleeping together, sharing a bed, school festivals and the like.
Be cautious, well, after all, I just like Chihei.