Introduction: “This was a mythical world where demons and spirits existed. Despite that, humans were beings who had no control over magic.Fortunately, countless magic lamps were scattered all around the world.Every human was required to choose a lamp when they were born. They had to cultivate the spirit in it that would stay with them for the rest of their lives.When Ron was reincarnated into this world, he had a system that not only allowed him to have multiple spirits but he could also level his spirits up easily.“Ding!”[Your spirit, Nature Spirit Ria, has killed a skeleton demon. 100 experience points received.][Your spirit, Naga Queen Reina, has killed a Vampire Lord. 1000 experience points received.][Your spirit, Flame Crown Sia, has killed…]…”...