From Shoujo Manga Maniac:1) Love LabThe chemistry club invented a special hormone potion. Each bottle cost 500 yen. Riko-chan's boyfriend, Yuuki-kun himself is extremely cold towards love. Riko-chan hopes to move their relationship one step ahead, but in the end...?2) Merry Kiss3) Perfect Doll4) Twinkle Twinkle5) Cupid's Arrow
