must read

⁕ Isekai - transported to game world.
Because of an obnoxious ad for a game, the main character, Lu Xing, accidentally enters the world of an otome game. In order to return, he must gain the affection of three male characters?! The aloof lord, the mysterious assassin, the gentle royal guard -- who will be his final pick? The survival of a straight man begins now…

Okay so first off, The innocent looking seme (2nd ML) is anxious and possessive when it comes to ML and MC. Looks can deceive. The ML is also possessive and is a jerk, but he's handsome AS FUCK!

Update: IT IS TRUE!!! He's a crazy, obsessed, possessive, and mentally ill about our MC. Seme just keeps reminding Uke that he belongs to Seme seme really tricked us from the start into thinking he doesn't care about Uke.

—5/5

⁕ Isekai - reincarnation (?)
Dojin gets hit by a car and dies, leaving behind his beloved sister and niece. He awakens in the kingdom of Yooguk, where the people call him “emperor” and serve a god named Yellow Dragon. Dojin soon discovers that Yellow Dragon called him to Yooguk for a purpose: to share his “life force” and protect the kingdom. As Dojin slips deeper into Yellow Dragon’s cold embrace, how far will he go in order to get back home?

⁕ Isekai - transportation to game world
When he opened his eyes one day, Yuyu found that he had entered a strange game world filled with monsters, and if you die, your death is broadcast live. To survive, you must beat the game. Fortunately, Yuyu meets the game’s cold-mannered god, Yunze. Caring more about his life than his image, Yuyu clings to Yunze for help.

⁕ Timetravel back in time to fix past
Lanka Norman, the spoiled youngest Emperor ever to reign, was betrayed and stabbed by his loyal "dog", the military earl, Jan Gray. Somehow, Lanka was returned to the time when he was six years old. To avoid the same disasters recurring in this new life, little Lanka is determined to stay away from that terrible guy this time- all to survive!