義章の言葉を借りれば"ヒッピー気取り"なカスミ。学生時代の腐れ縁で義章の部屋に…ベッドに…いたりいなかったり、自由でセクシーな居候であるBorrowing Yoshiaki's words, 'pretentious hippy' describes Kasumi. Inseparable since their school days, Kasumi is an independent and super sexy freeloader that comes and goes from Yoshiaki's room... and his bed... Not only that, there's more to Kasumi than meets the eye...