The Woobie: Seven is introduced as being a horrifying person because he can cause your greatest fear to become reality, is the one who cursed his master Lyu-Ui to be repeatedly killed and reborn and is the sole reason for the big drama in the final volume of the series. But once it's revealed that Lyu-Ui was partially at fault for the whole ordeal, that K has also been suffering all this time since his master originally died and that Lyu-Ui is actually grateful to him for "giving him so many lives to live", he comes across as more of a poor guy.
