The Immortal Guard

In the noble house, everything runs by rank. The young lady of the family has no patience with anyone below her, cultivators keep turning up to test themselves against the household, and the three great clans are already working towards a revolt. The guard they took on at the lowest wage takes all of it without answering back. That guard is Dante Gray. Ten years of cultivation on the mountain took him to the Mystic Phase, the only immortal in the mortal world, and he came down for two things. His master had arranged an engagement for him as a child without much thought, and he wanted it off. He also wanted to find the girl he had known before he left. He gave a false name and took the job. He keeps up the act of being a nobody, and the young lady comes round to him. Geniuses who arrive to challenge him leave humiliated. He treats the princess and then the Empress Dowager when nobody else can do anything for them, and when the three clans rise he puts the revolt down on his own. The Deity Lord who once received his guidance kneels to him. To the household he is still a hired guard, living plainly.