The Black Pig Prince Recalls His Previous Life and Becomes the Strongest is a Manga/Manhwa/Manhua in (English/Raw) language, manga 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

A black company’s ex salaryman, Kurokawa Isao, reincarnated as a villainous prince of a game he used to play on repeat during his past life. What awaits the fat and arrogant “Black Pig Prince”, Bratt, is a pitch-black fate in which he falls into darkness and gets killed. In order to avoid that tragic death ending, he endeavored in sword training, dieting and monster extermination. Even though he hadn’t expected much out of it, Bratt began to gain the respect of the people around him…