Sekai Ninja Taikai Kiroku

Noriko is caught up in an accident while she is going to her track and field competition. When she opens her eyes, there is the young doctor Shinoda who seems very concerned about her. She is attracted to his child-like smile, but from his lips, she learns a shocking truth - in the accident, Noriko has lost her physical body and what remains is only a brain, stuck in a little black box?! Note: The side stories in volumes 1, 2, and 3 are written in novel format.

For some unknown reason, which is apparently connected to something called the "World Ninja Record," high school freshman Yaezaka Tatsuko is being targeted by ninjas. Moreover, all of these ninjas are representative "Iga" from various countries. Thanks to her childhood friend, Japan's Iga, Tatsuko is an expert in defeating ninjas, however, she might not be able to overcome the craftiness of America's Iga.

Silenzio Agata, a hero of unparalleled fame known as the "Sword of Alba." His second life suddenly begins as a carefree school life?! After whimsically saving the life of a feathered fairy along the way, he ends up studying abroad at a "school for elven boys and girls" --?!

A text message would be sent out to people whose lives were in danger, guiding them to safety. This mysterious system called itself the "Police Inspector". One day, three youngsters—who had been saved by the Police Inspector in the past—receive another text. This time, it is the Police Inspector who needs help. Now, Natsumi, Shogo, and Teru work for the mysterious texter, who gives them clues as they track down a criminal. But who or what is this mysterious texter… and can they really trust it?