Synopsis: Spring Weapon No.1

A notorious group of robots called Numbers has brought upon a global threat! Luckily, the Monster Attack Professional & Pacific Organization (MAPPO), a top-secret team of specialists, is determined to stop them. However, when a MAPPO member who's still in high school crosses paths with an exceptionally unconventional new classmate, how will they successfully combat this adversary? Other tales: Volume 4: Kon-chan, The Ultimate Weapon Volume 5: K, The Missing Persons Detective