From peach.kyoudai:

Ayumu is a stage play actor who uses his attractive looks as a weapon. In the next job, he has to co-act with the promising and talented young actor, Yuusei. Ayumu seems to unable to leave the unsociable Yuusei alone and keeps pestering and teasing him during rehearsal. Then one day, he accidentally witnesses a scene of carnage between Yuusei and a senior actor, Tsukasa?! Moreover, Tsukasa will also perform on the same stage?! A love strategy of the young actors who strive to be a star!