Responses
Maybe this one? :O
http://www.mangago.zone/read-manga/kankei_wa_mada_lv_1/
Yes that's the one. Thank you :D
a teacher and a student. Student is caught smoking on school ground and teacher gives him candy? or something to keep his mouth busy. The student might be a delinquent. Sorry but this is all I can remember. Thanks (⌒▽⌒)