Shikii No Juunin

chiaki honda is a middle-school boy who neglects his studies. furthermore, he smokes, and has dyed his hair a bright green. one evening at the arcade, a girl challenges him to a match. the girl, who straightforwardly introduces herself as nanako kikuchi, suggests a bet, nonchalantly wagering her body for chiaki's watch. chiaki is soundly defeated, and he goes home fuming. his life goes on, of course. the next day, he meets a strange young man on the train who looks an awful lot like him. and eventually he runs into nanako again.