After heading off to a duel with the Tasogaredoki ninja, Moroizumi Sonnamon, Mr. Doi has gone missing. While Yamada and the sixth graders begin searching for Mr. Doi, the Tasogaredoki…

Follow the friendship between the Nobara family’s pet dog Shiro and a “small dinosaur”. Their connection helps the growth of Shinnosuke and the Kusakabe Defense Squad.

Amanda and her imaginary friend Rudger go on thrilling make-believe adventures. But when Rudger finds himself alone, he faces a mysterious threat.

One day, a woman named Chiyome Hesogakure with a child named Chinzō visits the Nohara family and claims that she is the real mother of Shinnosuke and takes him away…

When the five visit a private academy, Kazama is attacked, and left with reduced intelligence and strange bite marks.