After dying as a college student, Kain wakes up in a magical world where people form bonds with spiritual creatures to fight alongside them. Determined to rise to the top, he relies on a System and loyal companions. Everything seems to align with his ambitions—except the spiritual creatures he can contract seem to be remarkably…strange
The air thickened with the oppressive aura of spiritual power as the Doctor mobilized his, which was stronger than both Kain's and Serena's as a 5-star beast-tamer, to summon his contracts.
Although, he was only a 5-star beast-tamer, his strength may exceed weaker 6-star beast-tamers with not many blue-grade spiritual creatures, since 4 of his 5 contracts were all blue-grade.
The green-grade spiritual creature was a snake-like creature but instead of scales, it had a dark-red chitinous exoskeleton and mandibles. It looked kind of like a centipede, but without any legs. Its tail ended in a scorpion-like stinger that was more orange in colour, and didn't appear to blend in naturally with the rest of the exoskeleton…almost as if it were artificially added.
Of the blue-grade contracts, one was a massive beetle with a reinforced shell and mechanical enhancements that appeared to be fused with its being, rather than just being worn like normal enchanted equipment.