i forget the name but i clearly remember the mangaka is Mentaiko, you can search by the name first
forget what i said, here i the link
http://myreadingmanga.info/mentaiko-one-fourth-eng/
*here is the link
sorry typo #－.－)
I wanna know what this manga is also
Su~per Funny & Naughty till *ROTFL*
http://www.mangago.zone/read-manga/free_dj_can_haruka_have_sex_with_rin_after_suddenly_turning_into_an_odd_little_lifeform/
this guy turned small and went to his friend for help bc the way to get un-small is to fuck your crush or something. but when he puts in it, the other guy cant feel nothin so he sticks his dick in the other guys dick and fucks that.