Blade And Wand

A boy named Kairu whose mother was killed by a mysterious man in black. He now lives with his aunt, uncle, and his younger cousin. After rushing to his younger cousin the mysterious man in black shows up but using magic or so-called tendo. Kairu is now sent to the magical plain called Tomojikku and must enroll in Tomoko Acadamy, finding out his aunt and uncle are teachers and his cousin is actually his sister.