Chikan densha: Yurete mitchaku o-shiri ai

Hiro and Fumio are day laborers whose hobby is groping. Today, they had just preyed on an office lady on a crowded train. On the way home, Hiro is approached by Hikozo, a former groper, who is single and lonely, and asks if he would like to become the son of his pseudo-family, showing him a stack of bills.