Ambivalence Revenge Play

On the day of his junior high graduation, Ryuga Taira confessed his feelings to a friend, only for it to be spread around, leading to a miserable high school life. However, through hard work and money, he transformed himself and is now enjoying a successful life. Then, upon his promotion and assignment to a new department, he discovers that his former crush—and the cause of his bullying—Mikawa Yume, is now a part-time employee there. Ryuga begins plotting revenge, using his position as a supervisor. Wanting to see Yume’s face twisted in humiliation, he proposes financial compensation in exchange for physical favors, only for Yume to unexpectedly go along with it…!?

(Source: Takeshobo, translated)

Note: Includes one extra chapter.