Sara Morinaga adalah cewek pendiam yang cantik yang berumur 16 tahun. Gara-gara trauma karena dibilang "kalau tertawa jelek sekali" wajahnya jadi tanpa ekspresi. Tiba-tiba di depan matanya, muncul cowok yang pernah mengatakan kalimat yang membuat trauma itu...! (Morinaga Sara, 16 years old, is a cool, yet calm girl... But in reality, she has this incredibly ugly laugh. Because of the trauma she experienced, she became expressionless. However, the source of her trauma, the twins, who apparently became really good-looking, suddenly appears right in front of her...!)