The young heroes from the demon, god, dragon and human worlds meet at the Trinity school to hone their skills. There was a world-destroying war 25 years ago caused by human greed. Now, one young man has a vision of the past human hero who tells him that the future is in his hands. Which future will he choose: Vell of the demon world, Note of the god world or Ururu of the dragon world?

[From Hau~ Omochikaeri!]