A dream experience about bonds manufactured with individuals in an alternate world. The setting is a world, where everybody has eight expertise spaces. In these openings, individuals can put abilities like "Reinforce arm ★" and "Fire Magic★★" from expertise spheres, capacities that demonstrate amazingly valuable for endurance. The aggregate sum of stars your abilities have can never surpass your openings. Our hero Reiji, filled in as a slave that mines ability spheres until he was 10 years of age. Alongside his valuable more seasoned sister, Lark, they worked overwhelmingly in the mines until one day, a defiance happened at the mine and Reiji got his hands on a ten-star, a supposed "overlimit" expertise, called "World Ruler". Reiji went from a weak slave to having a capacity that outperformed human cutoff points, yet in the turmoil of the revolt, he was isolated from the main individual dear to him, his sister Lark. "To recapture his bond with her, to make her his actual sister", sincerely thinking thus, Reiji's experience to far off places begins!