Volume 1: "Konyoku Genkin" Urashima Keitarou is the sole male resident of Hinata House, a dormitory for women. Although he is somewhat of a failure, the girls compete fiercely to strip him naked. However, this is not what he believes! It is rumored that a map to Hinata's secret treasure is located somewhere on his body. Volume 2: "Hitou Kaikin" When a deranged robot resembling Keitarou exactly appears unexpectedly at Hinata House, the residents of the all-girl dorm unite to repel the out-of-control "Mecha-Keitarou."