https://www.mangago.zone/read-manga/hatsujou_animal/
https://www.mangago.zone/read-manga/hitotsu_futatsu_himitsu/ chapter 4-5
https://www.mangago.zone/read-manga/nirameba_koi/
https://www.mangago.zone/home/mangalist/6968/ pairing 1 & pairing 3 fit your bill
https://www.mangago.zone/read-manga/toraneko_no_shitsukekata/
https://www.mangago.zone/read-manga/sailor_danshi/
oneshot (pages 55-80) delinquent uke x public morality president of school
https://www.mangago.zone/read-manga/yatteraneeze/
https://www.mangago.zone/read-manga/tenshi_wo_otose/ page 7-38 + 202-209
delinquent x student council president
https://www.mangago.zone/read-manga/outsider_communication/
https://www.mangago.zone/read-manga/seitokai_yakuin_toshite_mondaiji_wo_kousei_saseteitara_nazeka_love_come_ni_natteita_ken/

Delinquent x class rep/monitor student or reg student.. esp if the delinquent has a shy side to him when it comes to the ml/mc pls