Start in DxD as Motohama: Leveling Up in Another World - Chapter 36: A level (I) beatdown.

“The war is finally over?! Then, what am I going to do with my life?” Caedrel, a man who had spent his entire life fighting, had no idea what to do next. Fortunately, he was offered to become a teacher in the greatest academy in the world. However, he wouldn’t be a normal teacher but a spy for his country’s Emperor! Doesn’t sound too bad, right? Well, it would have been great, that is…until he learned that his class was for the most talented(weird) students in the entire world.

My name is Qi Yuan, and I am a time traveler who now holds the esteemed title of the eldest martial brother at Seven Colours Peak. I am armed with a game jade slip capable of connecting realms across the heavens, and blessed with the ability to unveil hidden information through my discerning eyes.[A seemingly ordinary blade of grass reveals secrets of a clandestine meeting between True Man Ku Mu and Empress Dashang that transpired just three days prior.][Her name is Ruan Yixi, who appears to be your beautiful master on the surface, but she may have a deeper connection, perhaps she is even your wife.][This is Heavenly Dao of the World, a Spiritual Object renowned for its significance in Foundation Establishment][This is a lifeless planet, a potential vessel for the creation of a Golden Elixir].So my road of cultivation turns gradually strange.“Heavenly Dao? A Spiritual Object for Foundation Establishment?”“So many desolate planets, all refined into Golden Elixir!”The Heavenly Dao is used as the foundation and refining stars into Golden Elixir.I am Qi Yuan, I become the origin of all things.My name is Jiang Lingsu, a fellow disciple at Seven Colours Peak. My Senior Brother is mentally ill.He is never focused on work. Nor does he like cultivation. He only loves simulation games.Senior Brother says, “Playing games is like cultivation. It can also create a world.”One day, there is one more sun in the sky.I ask him what it is, he says, “That is my Golden Elixir!”This book is also titled 'Cultivation: The Jade Slip's Universe' and 'The Golden Elixir I Cultivated is a Planet,'

A very sweet entertainment circle novel about a closeted gong x fudanshi shou.

- Description from Novelupdates

It always starts with an accident.That’s how all these stories go. One moment, you’re minding your own business, and the next, you wake up in someone else’s body. For Caspian, his accident started earlier than he even knew.Maybe it began when his sister got him into romance novels? Or when he started really sympathizing with the villains at the ends of books? He’d never know. It was too late to worry about it now.For now, he had to find a way to fix this nightmare, or rehabilitate his image, all while trying to free himself from the fate set out for him. All because of the damn “gods” who he'd cut a deal with.These were the only two options he had available, and he wasn’t sure he could succeed at either. The man he had taken over for had been…a true piece of work. And the secret villain of the book he had been reading before he passed.It had been a harem novel. A reverse harem novel.He was trapped in a huge ass CASTLE with a bunch of men who hated him because he was taking affection and time away from their shared wife. All Cass wanted to do was be a good person, not mess around with this poor woman and her far too handsome husbands.But why would no one leave him alone? Was he too suspicious? And why, after going out of his way to avoid them like they had asked, did they keep pestering him?And where did the heroine go?How was he going to manage three, handsome men without the heroine?