This book is about 7 beings with different abilities and fight to restore their honor after they are wrongly accused and exiled from their kingdom they are (echoed) "the seven fallen angels". They use styler keys to unlock their hearts for their weapons.

So, I, Saco am just a guy who would occasionally do dumb shit because I feel its right to do it. When I go to Yokai Academy, I do more stupid shit and I get into fights more. What has my life become. Read on to see the things I go through and if I possibly can get any good luck for once.