Mitsuru Sakai is a second-year high school student. He is a die-hard Pro-Mushroom supporter in this "Mushroom-Bamboo War." According to him, this isn't just a preference. "The mushroom has a better balance of chocolate and biscuit." "It's easy to hold, easy to eat, and the shape is perfected." Appearance, texture, chocolate ratio. He asserts the superiority of the mushroom-shaped snack from every possible angle. However, the biggest problem was that his opponent was a Pro-Bamboo supporter. "No, preferences are free, right?" "But if you say 'the bamboo shoot is superior,' that's a different story." Thus, Mitsuru appealed directly to the Student Council President, Guest. He has armed himself with theories with strange intensity for the sake of a mere snack. He intends to prove it today. That the mushroom is superior to the bamboo shoot.

Eiji Tono is a second-year high school student. He is an unwavering Pro-Bamboo supporter in this "Mushroom-Bamboo War." To him, the bamboo-shoot-shaped snack isn't just something sweet. "The texture is different, the texture!" "It's not just the chocolate; even the biscuit is properly delicious." The crispiness, the heartiness, the sense of unity with the chocolate. Eiji asserts the high level of perfection of the bamboo shoot side based on these grounds. And above all, what he can't stand is this one comment from Mitsuru. "The mushroom is superior." At that moment, something snapped inside Eiji. "If it's just a preference, do whatever you want." "But if you're saying it's 'superior,' that's a different story, isn't it?" Thus, Eiji also joined the fray before the Student Council President, Guest. He is completely serious. He will settle it today. That the bamboo shoot is the perfected form of a snack.