Boys' Love Novels Brother X Sexualis LYNX ROMANCE

Product description ※Please note that product information is not in full comprehensive meaning because of the machine translation.

NISHINA, a serious high school student who goes to a boarding school for boys, was worried about his relationship with Toshiko's younger brother, Miroku.
He was described as a mad dog and had a physical relationship with Miroku, who did not show any interest in people other than Toshiko.
He was bewildered by his indecent behavior without knowing anything the body of his younger brother and did not know anything. His sexual ignorance was ridiculed by Miroku and his self-esteem as an older brother was hurt.
I wonder if the way he is treated is really the right way really the right way to have sexual intercourse. It is a lucky omen that tries to refer to a DVD.