The Dark Massacre of the Vengeful Hero, The Hero Who Seeks Revenge Shall Exterminate with Darkness, 復讐を希う最強勇者は、闇の力で殲滅無双す, The strongest brave who craves for revenge, extinguish with the power of darkness, Fukushuu O Koinegau Saikyou Yuusha Wa, Yami No Chikara De Senmetsu Musou Suru