Seth may be a boy, but he is known as a demon. He was raised by his parents who got a rare power which is the eye effect. The eyes become pitch black when they are in hell, but they become normal in the human world. Seth's eyes are super legendary because his pupils are a shape of a heart slashed by a red line.

Seth doesn't let anyone know his secret and he knows to be sure that he will feel normal with his eyes normal in the human world, but he keeps it hidden with a blind fold around him. He can still see through the blindfold even when walking.

He met Bianoka who told him about her sad relationships, so Seth helps to protect her whenever she needs him. Bianoka becomes curious of whats under Seth's blindfold. Seth has a crush on her and decides to ask her by the right time he is ready.

Seth now tells Bianoka to become his girlfriend and she said yes. Now Seth tells Bianoka about his eye power and Bianoka tells him about her relationships of losing her lovers two times.