Sensei wa Ore no Mono (Wara)

To earn money, Makoto Igarashi, a teacher, has a side job secretly working as a hostess. There she is "Rei-chan", a diligent but unpopular cabaret girl who doesn't get many clients. However, one day at her newly assigned high school, Haruma Rokudo, one of her students, discovers the truth. What's more, he says she'll have to "pretend to be his lover" as a condition to keep her secret-- !? "Become my lover, teach ♡" A love comedy between teacher (hidden hostess) and student (Yakuza's younger brother) that begins with a camouflaged lover contract! (Source: Libre, translated)