The Seven Deadly Sins, along with Elizabeth Liones and Hawk, have won the Kingdom of Leones back from the Holy Knights. At long last, it's their time to indulge in the peaceful lives they fought for. From inedible meat pies, overdue battles, unexpected stalkers, and the butterflies of first love, the Sins are accompanied by their friends in their carefree, fun-filled time together. However, the calm is broken with the premonition of a new threat, bringing upon the signs of Holy War and threatening to shatter the peace of the Sins' easygoing days.

Second year high school student Ichirou Satou has always been an average person—that is, until he runs into some not-so-average situations with his teacher, Kana The Demon Kojima. Kojima is Satou's Japanese language teacher with a reputation for being so ruthless that even school delinquents bow down to her. One fateful day, things escalate when Satou runs into Kojima in the restroom, leading them to share an intimate encounter that makes his imagination run wild for days after. Nande Koko ni Sensei ga? follows the daily life of Satou and his teacher as they continue to meet under similar conditions, growing ever closer with each encounter.

Konohagakure hosts a special tournament for ninjas of all ranks, stirring up fervor among the rookies who are eager to prove themselves in a competition against their superiors. Additionally, the winner is granted the opportunity to create their own village decree! Despite his enthusiasm to claim the prize, Naruto Uzumaki fails to focus on the game's objective as he becomes obsessed with confronting his teacher, Kakashi Hatake, in single combat.

Tsuwabuki is a normal student, though not very social. One day he meets a new transfer student, named Sumomo Akihime, and another girl, both the only members of the gardening club. Tsuwabuki is forced by a teacher to join this club. But then he bumps into a strange guy with dog ears, switching his drink with they guy's by mistake. Drinking it, he is turned in a stuffed animal. The teacher tells him that the only way to turn back to normal is to find the chosen girl and let her catch the seven stardrops. This girl is Sumomo, that accepts to help him, though she's not allowed to know the animal's true identity. (Source: ANN)