'This school... is at the center of the entire universe'
'I belong to you... Musashi.'
Those were the words of Vice President of the Student Council, Kagura Mami that were said to Katsuragi Musashi on the first day they met.
What's the secret of that school? What's the mystery behind it all? And what's the past that haunts Kagura and Katsuragi?
Suddenly, Seimei's apparent "friend," Soubi, appears. Soubi tells him that Ritsuka's true name is "Loveless," and that Soubi was assigned by Seimei to take care of Ritsuka and protect him. Ritsuka soon gets sucked into a bizzare underground society where teams of people, a "Fighter Unit," and a "Sacrifice," battle using elaborate and beautifully-phrased spells.
He seeks both acceptance of himself, and the answer to the mystery of who killed his brother and why.
On the day of his 16th birthday, this charm mysteriously disappears, and into Yuuto's life walks Himari. A cat spirit-samurai girl and demon hunter who swears to protect Yuuto. There is only one small problem. Yuuto has a severe allergic reaction to cats! Hang on to your manga-reading chair as this slapstick love comedy with a bit of good ol' fashion demon hunting is about to begin!