Poor Shouta suffers from a rare disease it is called topsy turvy; typically it happens from birth and affects very few men. Not much research has been done on this disease due to lack of funding. The way you can tell if someone has topsy turvy is if a man's testicles rest on the top of the penis instead of underneath. http://www.mangago.zone/read-manga/otoshiana_ni_hamerarete/uu/otoshiana_ni_hamerarete-chapter-1/15/
Poor Shouta suffers from a rare disease it is called topsy turvy; typically it happens from birth and affects very few men. Not much research has been done on this disease due to lack of funding. The way you can tell if someone has topsy turvy is if a man's testicles rest on the top of the penis instead of underneath. http://www.mangago.zone/read-manga/otoshiana_ni_hamerarete/uu/otoshiana_ni_hamerarete-chapter-1/15/