|2005||Momoyuki Kotori||Momoyuki Kotori||Comedy, Romance, School Life, Shoujo, Supernatural|
From Shoujo Manga Maniac:
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...?
This book contains five enticing short stories.