In the year 526 of the Church calendar, sorcery is well known but magic has yet to exist. A beastfallen mercenary who longs to become human meets Zero, a witch searching for the forbidden Grimoire of Zero, and agrees to protect her on the road to the royal capital. As they pursue the sorcerer known as Thirteen, they confront fear of witches and the competing ambitions surrounding a new power.

A grimoire fantasy in which a mercenary seeking his humanity and a witch searching for a book that could change the world set out together.

Shinichi Otokawa, a student council president known as the guardian of school rules, gains the power to turn improvised rhyming words into summoning magic after making a contract with the demon girl Mamirada. Armed with the dangerous ability to draw opponents into rap battles, where the winner can control the loser, he confronts the troublemakers at his academy.

Improvised rhymes become magic, setting microphone battles and life-or-death confrontations in motion at an academy.

Ayumu Kamijo, a first-year middle school student who loves shogi above all else, admires Keika Ohashi, the captain of the shogi club. After meeting girls who are incarnations of shogi pieces, beginning with the lance, Ayumu hones his skill with their help and joins Keika in a tournament to decide the East Japan representative for the middle-school team championship.

Guided by incarnations of shogi pieces, a shogi-loving boy aims for the top alongside the senior he admires in this fresh coming-of-age story.

Tenji, once hailed as a prodigy in the kendo world, has been unable to hold a bamboo sword since the death of his grandfather and teacher. Invited by Rika, a classmate as bright as a sunflower, he joins a club devoted to sodo, a sport fought with wooden spears, and tries to move forward again alongside its lively members.

A coming-of-age novel about a boy who sets aside his sword, takes up a spear, and faces both new companions and himself in the summer wind.