@Moderate-Reader He should have the upper hand, but doesn't really. Ninnir only found out because Feru, her follower, threatened to eat MC if he didn't hand over food (at the start of their relationship). Feru still has the power to kill MC easily, and Ninnir being Feru's superior makes her even more powerful. Ninnir stands to lose some tasty snacks if she anger MC, MC stands to lose his life if he angers Ninnir.