MTL - Rebirth 90s: Sweetheart Cub - Chapter 500 Raising a child at one hundred years old, worrying about ninety-nine years

A Federation Colonel with abnormal thoughts was locked in a dark room and met a little looney.

“Your whole body emits a scent that I dread (covet) and fear (desire).”

A frigid Colonel X little looney roommate: A sweet story of interstellar travel

- Description from Novelupdates

Waking up, Kim Hajin finds himself in a familiar world but an unfamiliar body.

Mortal Chapter: In pursuit of immortality, I seek to dominate the world! I, Zhongshan, aim to establish an unparalleled celestial dynasty, gather the world's qi, eliminate personal hindrances, and thus confront the might of heaven. I will create a new world and achieve immortality. One's fate, fortune, Feng Shui, accumulation of yin virtue, and fame are the five key elements! For the sake of immortality, those who cultivate fame and fortune will establish a celestial dynasty and gather the world's qi. Those who accumulate yin virtue will create a holy land and accumulate immeasurable merit. Those who cultivate Feng Shui can communicate with the two worlds of yin and yang and harness the power of heaven and earth. As for those who cultivate fate and fortune, and those who cultivate life, they... Immortal Chapter: Ask the world, who can achieve immortality and eternal life~~~!