bad boy ukes...

http://www.mangago.zone/read-manga/back_to_school/ maybe?

delinquent uke but not a tsundere, an incredibly enthusiastic one lol http://www.mangago.zone/read-manga/goshujinsama_to_wa_iwasemasen/

def what you're lookin' for but tsugumi is more dumb than tsun, god bless his omega soul (omegaverse)
http://www.mangago.zone/read-manga/megumi_and_tsugumi/

poses as a delinquent to get people to not approach him, actually quite the softie, age gap
http://www.mangago.zone/read-manga/kirei_ni_shiteyo/

personally never read it but they seem like the delinquent tsun you're definitely looking for ╮(￣▽￣)╭
http://www.mangago.zone/read-manga/saikyo_yankee_to_makeinu_na_ore/

oh damn can't forget this masterpiece
http://www.mangago.zone/read-manga/blue_sky_complex/

i have to recommend..... cuz bara tiddies.... and he's such a fierce idiot it's fuckin adorable but not to everyone's tastes
http://www.mangago.zone/read-manga/sokuochi_yarichin_yankee/

maybe?? never read these either
http://www.mangago.zone/read-manga/nirameba_koi/
http://www.mangago.zone/read-manga/tadatada_suki_to_iu_dake_de/

thanks you guys! have read some of these before but im down to re-read them (๑•ㅂ•)و✧

http://www.mangago.zone/read-manga/i_want_to_be_naughty/

this one has a couple volumes. the one above is just volume one

volume two-
http://www.mangago.zone/read-manga/warui_ko_demo_ii/

volume three-
http://www.mangago.zone/read-manga/warui_yatsu_demo_ii/


volume four-
http://www.mangago.zone/read-manga/warui_koibito_ja_dame/

http://www.mangago.zone/read-manga/caste_heaven/