Which would you choose: long-haired brunette Higashihara or short-haired blonde Kishishita? Adult protagonist Yusuke confesses to classmate Higashihara and is rejected, but they remain friends. She later visits his room to read manga and brings Kishishita, who grows physically close to him while Higashihara reads alone on the bed. After they leave, Yusuke masturbates to Higashihara's lingering scent, only for Kishishita to return and catch him. She has feelings for him, and sex turns them into a couple. Learning this, Higashihara begins wanting the man she once rejected, setting a constantly shifting triangle in motion.