Smbryms

Halo, the best musician of the time, suffers a traffic accident on the way to the Grammy ceremony. And when he regains consciousness, he finds himself in the body of a little Korean boy named No Hae-il. He finds himself in a completely different place and time. He confirms that No Hae-il's English name is Halo and feels a strong destiny. Halo, who entered Hae-il, proves to be a musical genius at this time as well.

Lord Perdien is a 1st class demon who has been living in the human world with his son. He has no intentions for his son, Miryu, to follow the path of the demons and while their lives were peaceful up until now, a succubus arrival and a sudden illness of his son are more than enough to disturb their peaceful way of living. He has to make an important choice: Either to let his son die or listen to whatever the succubus offers him for a cure.