Kraith, who was granted the mysterious gift [Holy Grail] whose purpose was unknown, was exiled from the House of Winsland as a good-for-nothing.

It was Hinoka, whom he met in the village, who saved the despondent Kraith.

Together with his childhood friend Hinoka, the two eventually became adventurers, gathered companions, and achieved renown as the S-rank party [Einherjar].

Intent on fulfilling a childhood promise, Kraith, who was about to confess his feelings to Hinoka, was rejected by her and left in shock.

When they entered the forest for a quest, Kraith and his companions were almost killed by their own party members.

The [Hero] Londo told Kraith that Hinoka was dating him, and seeing Kraith as an obstruction, abandoned the despairing Kraith as bait for monsters.

Exiled from his home, his childhood friend stolen from him, and almost murdered by his companions, Kraith for the first time yearned for "power" himself, and the [Holy Grail] awakened its abilities!

—Vowing never to trust anyone again, Kraith resolved to exact revenge.

"Maybe I can do everything by myself now?"

He might be told that defeating the Demon Lord is his mission, or receive pleas for help from the Elven Nation, or get entangled in various incidents, but none of that matters.

Revenge on those who betrayed him!

Faced with Kraith's overwhelming power, his surroundings gradually began to murmur, "Maybe he can just do everything by himself."