After Being Reborn, I Tortured The Vicious Sister-in-law - Chapter 321 - 321 Found the Box

[You have become the master of the Warden Mansion.][Your first quest is to refine mana from one of your maids by having intercourse with her.]When nineteen-year-old Jett Talon suddenly wakes on an emperor-sized bed, he finds himself lord of a mysterious mansion where countless gorgeous maids stand ready to serve. His first companion is Mia, a blonde elven maid who checks his every box. After making love to her, Jett gains mana, unlocks legendary powers, learns his duties as Master of the Warden Mansion, and uncovers its hidden secrets.

Once I’ve become Immortal, then my attempt to conquer the world shall begin.

I, Zhong Shan, in order establish a supreme heavenly dynasty, must marshal all the luck that I can gather to cleanse my own karma. Then I will have the strength to fight heaven itself, create a new world, and live forever.

First: Fate

Second: Luck

Third: Feng Shui

Four: Cultivate Inner Virtue.

Five: Fame

To gain eternal life.

To obtain fame, one must establish a heavenly dynasty and amass the luck of the world!

To cultivate inner virtue, one must establish holy sites and accumulate an immeasurable amount of merit!

To cultivate Feng Shui one must learn to communicate between yin and yang and control the powers of heaven and earth!

To cultivate luck! To cultivate fate!

Ask the whole world, who can have eternal life!

- Description from Novelupdates

One-eyed Wolf Lecan is a skilled adventurer who has conquered many dungeons all over the world. He had been going solo for a long time, but in the last three years, he’s had a partner. That partner jumps into the black hole together with Lecan, and both go their separate ways as they fall into another world. Dungeons and magical beasts also exist in that world. After learning the native language, Lecan goes on a journey. Meeting a good teacher, Lecan studies medicine making and magic under that teacher, and begins his dungeon explorations for real.