Based on

Movies like Chikan densha: Hikai itazura shigi (2006)

Kosuke Sakamaki is a super veteran groper. He's a real pro. On his way to his junior colleague Bunkichi's house to ask for money, Sakamaki gropes him as usual, but the sensation is different than usual. He finally meets the woman he's been looking for. However, he arrives at the station he was aiming for and reluctantly breaks up with her...