Invisible Guardian of the Abyss

At first he thought he was saving his sister, but in the end he discovered that it was Xiao Gu who fulfilled his mission, it was Junzi who recorded his deeds, it was Xiaoman who saved his life, it was Wangshu who accompanied him for the rest of his life, and it was Fang Min who saved his honor. The one who was rescued turned out to be Xiao Tu.