The Beautiful You

The Beautiful You (傾国の君) is a candy created by Chronoire Schwarz VI was made on purpose to materialize the power inside Honoka Takamiya's body.

Principles
It's actual power, in fact, is to break one of the seals inside Honoka's body, and letting Evermillion's physical body to materialize temporarily. It is also implied that the broken first seal will breakdown the rest of four remaining seals eventually.