User blog comment:DYBAD/Character Sheet/@comment-5651818-20170409035754/@comment-4867780-20170409081253

Technically, it's the shard gaining sentience/identity through absorption of the human, but the shard itself was just an empty box until then, so it can also be considered as the human transfering his sentience/identity into the shard. For all intents and purposes, both are true : human and shard transcended their own limits via each other and became a greater entity.