Spring Weapon Number One

Summary

An evil organization of androids called Numbers is threatening to take over the world! Luckily, a top secret defense force of specially trained operatives called MAPPO (Monster Attack Professional & Pacific Organization) is there to stop them. So what happens when a MAPPO agent in high school gets a new classmate that's a wacky-looking Number? (Source: VIZ Media) Included one-shots: Volume 4: Saishuu Heiki Kon-chan Volume 5: Shimatsuya K