[Evolution] + [Dungeon] + [Magic] + [Non-human] + [Single Female Lead] + [System] + [Upgrade]

Accidentally traveled to a magical world and was turned into a tattered skeleton on the first day

Upgrade, evolve, add attributes

From a low-level skeleton that breaks at the slightest touch, it becomes a hard skeleton, and then fuses with the horns of a bone dragon to evolve into an elemental skeleton.

Upgrade, integrate, evolve and grow step by step

Until you become the strongest skeleton, start from a low-level skeleton