Flame Peacemaker summary:

"Edmond Dantes" is an eccentric adventurer who managed to survive the legendary dragon's dungeon. He spread magic refining techniques that greatly changed the world. However, along with his return, strange magic stones and mysterious dungeons appeared, causing great chaos in the world The "Red Pepper" guild, which receives a clue about this situation, sets out on an adventure to prevent any further chaos with a boy named Seiji who wants to become a piece maker.Piece Maker of Flame manhwa