I Work as a Servant in My Senior Sister's Cave Abode, Secretly Becoming an Immortal

Su Yun possesses the Chaos Sun Physique. As long as he gets close to female cultivators, he can cultivate faster.

But he can't get too close.

That's because this physique is also known as the Innate Dual Cultivation Sacred Physique. If his senior sisters discover it, they'll refine him into a cultivation furnace and drain him until he's a dried-up corpse.

He can only do his best to lie low in his senior sisters' cave, working as a servant and cultivating in silence. He mustn't let anyone discover his constitution.

From that day on, Su Yun has one great mission:

Do his best not to get drained by his senior sisters until he's a dried-up corpse.