Love Laboratory

From : 1) *Love Lab* The 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 Kiss* 3) *Perfect Doll* 4) *Twinkle Twinkle* 5) *Cupid's Arrow*