Секрет раскрыт!?

After an accident, Seiji and Midori relize she needs some new clothes. So after some thought, they go to a doll shop. After Takamizawa Shuichi, a fellow student discovers that Seiji collects dolls, Seiji pretends to be his friend and have the same hobby to keep his mouth shut. But how long before Takamizawa discovers thier secret?