SHIMIZU YUU

In the fantasy story, the demon king Leonis sealed himself away for 1,000 years in order to prepare for the final battle, but when he woke up, he found himself in the body of a 10-year-old boy. A beautiful young woman named Lisellia from the Holy Sword Academy then says to him, "Why were you locked up in such a place? It's OK now, this big sister will take care of you!" Under Lisellia's care, Leonis is shocked to see that the world has completely changed. Bewildered and confused, Leonis finds himself enrolling at the Holy Sword Academy.

16-year-old Yukito Kirihara lives with his 14-year-old sister Sana, who he treasures more than anyone else. But when an ogre shows up outside of his window looking for Sana (a shocking event in its own right), Yukito leaps to save her—and is killed. He's offered the promise of reincarnation by a mysterious woman, who gives him a character sheet in a mysterious book. But when Yukito sees Sana in there, too, he sets off to find her, and save them both—even if he only has 1 hp with which to do it!

Ririka Kirise's a style-savvy high school girl who's struggling to keep up in her chemistry class. Looking for some extra help, she opens the door to her teacher's office-breaking his magic barrier in the process! Unbeknownst to Ririka, Renji is actually a sorcerer...and Ririka has the makings of a sorceress herself. Before she knows it, she's wrapped up in the world of witchcraft as Renji's apprentice-and getting into some sticky situations...

A spin-off series showing the daily lives and work of the platelets.

When the Chemistry teacher secretly practices witchcraft at normal school, many things can go wrong! Fuyumi Renji realises this as Kirise Ririka somehow walks through all his magic barriers and interrupts his spellcasting! How could a normal high school girl ever be able to do this?

16-year-old Yukito Kirihara lives with his 14-year-old sister Sana, who he treasures more than anyone else. But when an ogre shows up outside of his window looking for Sana (a shocking event in its own right), Yukito leaps to save her—and is killed. He's offered the promise of reincarnation by a mysterious woman, who gives him a character sheet in a mysterious book. But when Yukito sees Sana in there, too, he sets off to find her, and save them both—even if he only has 1 hp with which to do it!