In 2027, Phantasy Star Online 2 has become the trend at Seiga Academy. Every student is swept up in the craze—except Itsuki Tachibana, a scholar who avoids video games entirely. Because of the game's popularity, administrators are conducting a review to determine whether it negatively affects students" academic performance and well‑being. This investigation brings Itsuki into the spotlight, catching the eye of Rina Izumi, the student‑council president who is determined to prove that the game is not responsible for any decline in school standards.
To support her claim, Rina appoints Itsuki as vice‑president of the council and assigns him learning to play Phantasy Star Online 2 while preserving his grades. Now he must submit reports on the game"s mechanics, evaluate its merits, and present findings to Rina. With these responsibilities on his shoulders, Itsuki becomes the unlikely guardian of the game"s reputation.