You've got to have read a lot of BL to get the humour. The author is a genius this is hilarious lmao! This is like those funny parodies of shoujo I used to read on Tumblr but way better. Mc is so diligent, someone should know about his hardwork and tears.
Zettai BL ni Naru Sekai VS Zettai BL ni Naritakunai Otoko