From Tokyopop:

To experience true love, sometimes you have to break the rules. Taku is a total player and a sometime-gigolo who has a little black book a mile thick . But when he meets a shy girl named Chizu who falls head over heels for him, he tries his hardest to change his playboy ways. This poignant volume from Sakurazawa-san depicts Taku and Chizu's bittersweet summer of love.