While revamping my character Kenta I was talking to Omni-Aura from FA and he made the suggestion of making Kenta a Hanyo or half demon. Thus he would have a time when he would lose his demon power, size, and strength. During the new moon, Kenta would change into this smaller and weaker version of himself. Though not 100% show accurate, I think it gives an interesting side to the character.

Ember, normally being the smaller of the two, now guards over Kenta and protects him during his times of weakness.