Yajima Shigeru realized himself falling for straight boys and has repeated one-night stand to flee from his failing love. This time, his bad decision force him to kiss his current love who is a married junior from his work place! The train conductor happened to see the drunken Yajima planting a kiss on his junior. After being denied by his junior, he's picked up by the conductor, Mita Yuusuke, who claims that that he fell in love at first sight?!