Trait Hoarder 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.nl fastest updating comic site. The Summary is

Kim Joonsoo, a free-to-play ranker in the mobile game, "Arcane Seoul," possessed the tutorial character, Warrior Kim! He has to survive in a merciless world as a basic character. All he has to trust is his game knowledge as a ranker and Warrior Kim's ability to swap out traits indefinitely!