Captivated by the beauty of your best friend's wife when visiting. Rin and Kawamura used to work at the same company. Kawamura fell in love with her from their very first meeting but it was Kenji who won her heart. Too disappointed, Kawamura left. After a long time, Kawamura returned to Tokyo to seek a job and was invited by Rin and Kenji. Kawamura was allowed to stay overnight with her and became so close to Rin that it drove Kawamura crazy.