The TV animation of the manga "Underground Ninja" by "Please Call Me Hero" author Hanazawa Kengo. Story summary: The once-popular Japanese ninjas disappeared due to forced disbandment. In fact, ninjas still exist in secret, and the number is said to be as high as 200,000. Some elite ninjas are responsible for carrying out secret missions in national confrontations and are quite active. On the other hand, lower-level ninjas often cannot get jobs, and one of them, Kumogakure Kuro, is also living a life like a NEET...