MTL - Harue Kagetsu - Chapter 136

Bai Aoxue, the best mercenary in the 21st century, is accidentally sent back to the Chengxi Dynasty in Great Continent due to an explosion in her mission, and trapped in the first daughter of Prime Minister. After her rebirth, she is set up by her father to marry the 5th prince Jun Yeyan who wears a mask all day long.
In the face of bloodthirsty enemies, discord between brothers, collusion among courtiers and invasion of enemy state, can Bai and Jun resolve the crises? What will happen to their political marriage? How will the fierce battle for the throne end?
With many twists and turns, the book brings you to experience palace revolution, love and hatred thousands of years ago.

- Description from Novelupdates

Junseo thought he was just installing a chill farming sim to de-stress after another soul-sucking shift in Seoul. Grow some crops, raise a few cows, maybe romance an NPC—simple stuff.Then he woke up inside the game.In a new body. In a suspiciously sexy world.With a system that thinks “breeding” is more important than breathing.And a robot waifu guide who takes everything way too literally.Now he's stuck in a countryside hellhole with zero skills, zero tools, and a suspicious loaf of bread. His only goal?Survive without accidentally triggering a hentai side quest.Too bad the game has other plans.Too bad the villagers are way too friendly.Too bad the only way to unlock skills... is by combining everything.He just wanted to grow carrots.Now he might end up marrying half the village.Tags:Transmigration,Harem (slow burn),Comedy,Slice of Life,Farming Sim,Adult Themes (18+),System,Self-aware Protagonist,Kingdom Building,No Overpowered Skills,Robot Waifu,Skill Fusion and Lewd but Smart

“Why is this [Summoning Card: Goblin] wearing a mask?”

“Because it’s a Goblin Gangster!”

Transmigrated to a wizarding world.'But... what about the promise of wizards pursuing truth?''Why is it just a bunch of greedy people who seek power!'...Passing guests, please come in and take a look; if it's not the right fit, then feel free to leave.