https://bookwalker.jp/de720fe66b-4e9d-41f8-a9c2-52c5b714d73e/
I've been preparing for a competition that could open doors for me as an aspiring artist, but one day, in one fell swoop, I lost my art model and my girlfriend. I was still reeling from it when a young girl suddenly showed up beside me and said she would be my new model. However, now she says I need to offer up my body in exchange for her help...?! I had lost everything, and she knew nothing of the world; this is the story of our warped and fleeting, yet innocent, love.
"Please, marry me." My coworker, the person I hate the most in this whole world, suddenly confesses his love to me, but doesn't realize that I'm Haruno Tsumugi...! Tsumugi, who is the lowest performer in sales at her company, is constantly stressed out by her good-looking, top-performing coworker, Atsushi Honke, who is equally aggravated by her inability to do her job. Why is someone as hard-working as me at the bottom, while a game-obsessed slacker like him gets it all...?! One day, she's lending a hand at her dad's drag bar, wearing her usual disguise, and serving customers, when he happens to come in for a drink! Thus begins this love story of misunderstanding born of lies and revenge! (Source: Manga Plaza)
Sachi is 28 years old, works at a cram school where Suwa, the school's principal is handsome and charming, putting his spell on the staff to the parents and children. However, after her friend ran off with the money she lent her, she's struggling to get by. After work she's suddenly approached by a suspicious man, Suwa comes to her rescue! Will he be Sachi's prince charming after this fated encounter? (Source: MangaPlaza)
Volume 2 is actually the sequel and is published digitally as Boku to Kanrinin-san no Zutto Tsuiteru Nichijou.