At the start , 3 girls are gang-banging 1 boy , fisting him , fingering him . Now this is the kind of foursome that I like to watch , lol .
Page 15 : how can the MC climb the tall wall with his broken left arm ?
Last page : shonen pump is a parody of shonen jump , aka shonen dump .
this bloody go board is probably a parody of the 1st chapter of hikaru no ga* , lol :
https://mangadex.org/chapter/128847/1