Few things may harm people more in their adolescence than the heartaches that come with unrequited love. This is the situation with Natsuo Fujii, who has been enamored with his school's ever-jovial instructor Hina. Natsuo, daunted by this unattainable aim, entertains his buddies by attending a mixer. There he meets Rui, a girl who shares his lack of excitement. Rui invites Natsuo to her house and invites him to have sex with her, thinking that the experience will prevent her friends from treating her like a dumb child. Natsuo reluctantly accepts, his hopeless love for Hina still fresh in his thoughts. Both unsatisfied with their "first times," the two decide to split ways as strangers.