http://www.mangago.zone/read-manga/you_re_my_princess/
http://www.mangago.zone/read-manga/koi_wa_kamen_no_uchigawa_ni/
http://www.mangago.zone/read-manga/ai_ga_love_shite_you_nanosa/
http://www.mangago.zone/read-manga/satou_kun_ni_wa_kanawanai_sachimo/
Not exactly the class prez/student council but popular/"nice"/studious guy & delinquent:
http://www.mangago.zone/read-manga/shishi_mo_kobamazu/
http://www.mangago.zone/read-manga/tadatada_suki_to_iu_dake_de/
http://www.mangago.zone/read-manga/ore_no_kirai_na_yankee_kun/
http://www.mangago.zone/read-manga/goshujinsama_to_wa_iwasemasen/
http://www.mangago.zone/read-manga/isagi_kojima/
Awesome, thank you!!!
Can anyone recommend me some yaoi/BL where the class/student council president falls in love with a delinquent or vice versa?? TIA