My Unique Skill Makes Me OP Even at Level 1

Ryouta Satou, who died from overworking, was reincarnated into another world with a unique catch: his level remained at 1. This limitation, however, was offset by a rare skill that allowed him to craft items from monsters that shouldn't exist in the world. By utilizing this skill and acquiring ability-up items, Ryouta was able to max out his stats and equip himself with a vast array of unique gear, making him the strongest individual despite his fixed level.