MTL - This Game is Not Easy - ~ Pseudo more twenty-five

Xiao Ran transmigrated to a fantasy world. As a dungeon guard in the Celestial Dungeon, with a special floor called the Purgatory meant for powerful demons and martial arts experts, he faced a huge challenge from the start. The Eldest Princess acquired a forbidden martial arts technique and was banished to the Purgatory. However, no one was powerful enough to restrain her. All the dungeon guards were defeated. Xiao Ran stepped up and declared, “Your Highness, it’s better for you to behave yourself on my territory” and effortlessly subdued the Eldest Princess.

He progressed from imprisoning the Eldest Princess to delivering the Great Xia Kingdom from the evil clutches of various demons and evil martial arts experts.

…

Xiao Ran was the mastermind behind the scenes.

One day, two forum posts titled “I Seem Unsuited for Dating” appeared on Promontory Forum’s Feelings board nearly at the same time.

User A: 「I have a severe case of mysophobia and possessiveness. I cannot accept it if my girlfriend has had relationship experience. I went to see a psychiatrist, but I haven’t improved. I might truly be unsuited for dating.」

User B: 「I think I might be unsuited for dating. I very much enjoy the ambiguous phase of sounding out each other’s feelings, but after becoming official, if they want to hug me, or perhaps kiss me, I will immediately feel nauseous.」

Internet User: 「I beseech that the two of you be together. Don’t go and harm anyone else.」

- Description from Novelupdates

Xue Xi is forced to fall in love at first sight with this dangerous man on their first meeting. With death being the only other option, she makes the first move:

I’ve become a rogue lord in another world! This is the story of a game I was playing! The story of the protagonist, who has become a rogue lord who dies after two days, successfully uses the game’s history and system to escape his impending doom and become the strongest.