Ragnarok: Requiem for the Lost Ones 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

An official webcomic released by Gravity and Webtoon based on the game Ragnarok Online. This short story covers the history of the Bio Laboratory in Lighthalzen and the events that lead up to its current state in the game. It follows along the Lord Knight Seyren Windsor and his crew of adventurers as they struggle to escape from the clutches of the mad scientist Wolfchev.