Jin was never the heroine's trusted protector, only the expendable bodyguard everyone took for granted.

After waking up in the role of a terminally ill knight destined to be used and discarded, he quietly walks away from the Holy Kingdom instead of sacrificing himself for people who never valued him. His decision leads him to an unexpected offer from the empire's infamous villainess, whose ambitions may hold the only chance to save his life.

Only after he leaves does everyone else begin to realize what they've lost.