Protocol: Rain

Shun Tokinoya, a second-year high school student, shares a household with his mother and younger sister after his father's fatal accident and his sister's injury. He now works at an esports café called "FOX ONE," where he socializes with childhood friends he used to play games with. Shun's friends at "FOX ONE" are struggling financially due to the café's debt, so they decide to compete in the Xaxerion Championship to win the prize money.