I am the Final Boss is a Manga/Manhwa/Manhua in english language, MONSTERS series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.nl fastest updating comic site. The Summary is

A corporate sl@ve in a tech company accidentally discovers a secret game server on the Dark Web. However, he is forced to play and become the final boss of the game where he could earn or lose all of his crypto depending on the quests given.