Ame no Hi no Iris - Chapter 4 - Letters Part 2

Zhen Lang and Gu Jing have been childhood enemies for over twenty years and pretend best friends in front of their parents. Zhen Lang and Gu Jing’s source of happiness is defaming their enemy (each other) at every opportunity, dreading the day their parents’ match-making dream comes true.

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

Life in a noble house isn’t all luxury.Luan Meskevela never expected to wake up as the third son of a powerful duke. But when he’s transported into the world of Sigil Online, he finds himself gifted with two rare and powerful Sigils—abilities that make him a force to be reckoned with.Now, Luan's got more than wealth on his mind. He’ll charm a priestess, exploit a merchant guild, and maybe even befriend a spirit or two—if it gets him a better vintage of wine. With a mix of charm, wealth, and newfound power, he courts beautiful women, explores the world around him, and builds connections that could shape his future. Yet, beneath the surface, political intrigue and family rivalries threaten to disrupt his carefree life.In this new world, Luan plays for the thrill, not just for power. But as he enjoys the perks of his life, he soon realizes that every decision has consequences, and the people around him may not always be what they seem.

Yo, Hi! I’m Frank, I made a deal with a demon to pay me some money for receiving a guest for a few days every week.
I had no idea about what I have done.
On May 1st, Conan ‘the God of Death’ came to my house. I was forced to let him in and we get involved in a criminal case.
On May 8th, Bruce Wayne ‘Batman’ came to me. I was forced to follow him to fight crime.
On May 16th, Hannibal Lecter, The Silence of the Lambs, came to my home. I can only say that I really can’t stand my guests.

- Description from Novelupdates