Desperately Making Her a Princess is a Manga/Manhwa/Manhua in english language, Action series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

The long-term public service exam candidate, Minseo, finds himself trapped in the game, “Raising Lena” as he tries to escape his grim reality. In the game, Minseo becomes a character named Leo, and he must navigate through a world with three different scenarios to accomplish his mission of turning the protagonist, Lena, into a princess. However, the game “Raising Lena” boasts an overwhelming level of difficulty due to enemies who are set to thwart Minseo with their immense power and influence. Will Minseo be able to complete the game by making Lena a princess and return to reality?