http://www.mangago.me/read-manga/no_color/ introverted uke? not school but very sweet theme and happy
http://www.mangago.me/read-manga/bukiyou_na_silent/ super shy uke more fluffy
http://www.mangago.me/read-manga/konbini_kun/ drops out of school cause of bullying...more fluffy
http://www.mangago.me/read-manga/fudanshi_kun_no_honey_days/ first ones kinda gloomy and shy...kinda smutty
http://www.mangago.me/read-manga/aitsu_no_daihonmei/ shounen ai...quite famous so maybe you've already read it...but for the sake of being thorough plus its cute as all get out
http://www.mangago.me/read-manga/risou_no_koibito/ not a school manga but uke gets called names and bullied LIKE highschool....only you know...in a gay bar...very smutty has S&M feel...so be warned
http://www.mangago.me/read-manga/oko_sama_star/ fluffy
Thank you!
Thank you!
*i already read this one though
Hope you find some you like
Manga with unpopular uke?