Manga by author Haruta

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.Struggling college student Satou is in big trouble... He's broke. He goes to class depressed, where his friends Kaname and Yuusuke conveniently offer him a part-time job. Satou leaps at the chance without hearing the details, but of course there's a catch... Turns out he has to suffer through a lot of very special "research" and "experiments"...! This lucrative part-time job is full of some eye-opening first-time experiences, but will Satou ever catch on to their real motives!?

Shishikura yuu, watching his friends getting married, he also wanted to. So he applied for "Fate searching".... But to his suprised, he is fated with his longtime enemy,who is also his co-workers.Their fight for love but surrounded by fate string, will they be each other fated partner?