Create a Byakuou Xellgenome creature with this custom set! You get four XG molding blocks (two slots), two packets of white XG Monster Powder, two "space-time binders," a simple stick, an XG fossil plastic runner, a Xellgenome custom display base, a syringe, and a jar.
First, assemble Byakuou's fossil and place it inside its molding blocks. Mix one packet of XG Monster Powder with water and stir it inside the jar. Fill each molding block with the mixture by using the syringe, and secure the blocks with the space-time binders. Let the mixture set for about 20 minutes and then remove it from the molding blocks. Carefully remove any excess material with the stick, and you'll then have a completed jelly-like Byakuou model! Afterwards, Byakuou can be dissolved into liquid by adding XG Melting Powder (sold separately) on top of the model to melt it back down to its fossil.
More information is at Bandai's Xellgenome homepage (Japanese language).