MTL - Full Marks Hidden Marriage - Chapter 25 Is this cohabitation?

He was only an ordinary Chinese youth. Because of the strong refusal of his soul, he unexpectedly arrived in this strange world. He ardently loved peace; yet, he had no choice but to become a Demon God. If cultivating to the peak could lose person’s human nature, then all living creatures will weep with grief, waiting to be slaughtered. Can he still remain calm after this? In the vast wilderness, a handsome youth carrying the wisdom of “Daodejing”, step by step would rise to prominence in this world. Condensing and cultivating his bloodline to the supreme. Controlling and commanding the rivers. Swallowing and spitting the sun…

Tl: 1.Daodejing also mean as “The classic of the virtue of the tao” was a book of dao by Lao tzu, a sacred text of Daoism.

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One day, I woke up only find out that I’d become a Demon Lord, an individual responsible for protecting a dungeon. The world I’d been spirited away to was one filled with violence. Gigantic monsters wandered through it and competed with each other each and every day for the right to survive. I had no choice but to strengthen my dungeon’s defenses in hopes of living another day—or at least that was what I’d thought. For some odd reason, I instead ended up spending my days in relaxation and bliss.

There was a Senior Brother and a Junior Sister. One of them was transmigrated to this world and had cheats while the other was the reincarnation of a Great Emperor.

Yu Shanshan, who has been tyrannical and lawless for 20 years, suffered retribution at the age of 21. She changed from a little ballet princess of 45 kg to a poor and fat one of 90 kg.. Apparently, eating was the most important thing in her life. Her success in losing weight was far away.

However, one day, the father of her child who had disappeared for four years came back. From then on, Yu Shanshan was forced to embark on a diet that was worse than death.

- Description from Novelupdates