MTL - 80’s Sweet Marriage: Struggle for a Good Life - ~ Works related

When Yao Ling saved a handsome man, she never thought that there would be a day she would propose a marriage to him.

In the current era, people are either normal or are with ‘special abilities’. Cases related to the latter are managed by the “National Anomaly Prevention and Control and Special Species Management Office”.
Qi Zheng Emperor Sheng Lingyuan was reawakened a thousand years later after he jumped off the fiery Red Lake. Xuan Ji, a newly transferred staff to the Reparations Division of the Deviant Control Office, finds himself having to clean up the mess of a revived tyrannical monarch. The two seemed to share something from the past, but unbeknownst to them, a big conspiracy is stirring right underneath their noses that could destroy the balance of the world.

- Description from Novelupdates

It all happened so abruptly. After finally grasping my situation, I found myself in an entirely different world. Looking around, I noticed others in the same predicament… Could this possibly be one of those Hero developments?

Was there a tyrannical Demon Lord needing extermination, or would I be tossed into the maelstrom of war? Whatever it was, I was afraid. I never wanted to be a Hero. I don’t want to harm another…… Ignore the nonsense I was spouting; there was nothing to fret over.

The Demon Lord was slain a thousand years ago, and 800 years had passed since the last war. The nobles didn’t treat us summoned like tr*sh; instead, we were kindly cared for. The Demons have been on good terms with Humans for some time now. Dangers, such as monsters, were being taken care of by the Guild and the Order of Knights. What’s more surprising is the fact that I wasn’t even a hero! Instead, I was unintentionally summoned!

It also turns out that this world was a world in which the three races, the Spirit World’s Magical Races, the Celestial World’s Divine Races, and the Mortal World’s Human Races, are kind neighbors. Here, everyone lives a peaceful and fulfilling life.

In summary, this other world was――at peace.

What’s my plan for the future? For my limited stay here, I will live this world to its fullest; going on a cultural exchange, sightseeing, then, after experiencing the festival that is only held once every ten years, …… I shall safely return home.

However, despite my lust for a peaceful last year before returning, this planet’s heavyweights have begun amassing around me, and……

This is a story of a man named Kim Sae-Jin, who one day, inexplicably wakes up as a Monster. Follow him and his perilous journey to get his life back as a Human, all the while growing even more versatile as a Monster in the process. This should be… complicated, somewhat.