This study examined the lifestyle characteristics of male high school students in Seoul and Tokyo, and also examined the relatedness of the constructs of lifestyle, satisfaction, and passenger manners. The following are the five major findings:(1) Lifestyle: Differences were observed between Korean and Japanese boys. The former were more prestige-oriented and willing to stand out than the latter, while the latter were more dependent and introverted. (2) Factor analysis of the lifestyle questionnaire items of the students in both countries extracted four factors: self-realization orientation, introversion/unsociability, trend orientation and prestige orientation. (3) According to the simultaneous analysis of the lifestyles of Korean and Japanese male high school students, the less introverted (the more sociable) the student was, the stronger his trend and self-realization orientations were. (4) Satisfaction: In both countries, the less introverted the student was, the more satisfied he was. Students in both countries placed the greatest emphasis on satisfaction with their relationships with friends. The second greatest emphasis was on satisfaction with school life for Japanese students and with family life for Korean students. (5)Passenger manners: In both countries, the less introverted the student was, the stronger his trend orientation was, and the stronger his trend orientation was, the worse his passenger manners were.