megane no shoujo

With her, we are dealing with an ice-cold bride, someone who could chill you to the bone just by a glance into her soul. She commutes to school daily by train, and if a male passenger finds himself near her—she always chooses a middle compartment to avoid the crowd—the unlucky guy is invited to play a game few can refuse. The rules are simple: she poses a question (like who will board first at the next station or who will sit down first when a seat opens) and if her partner guesses right, he earns a reward. These rewards range from simple gestures to more intimate acts. Anyone invited to such a game might feel fortunate, given her striking appeal. However, there's a twist after the "climax." The following morning, she stands on the platform, smiling as if nothing occurred, chatting about the latest gossip.