User blog comment:B214/Volume 23 discussion blog/@comment-172.58.16.1-20170324223136/@comment-1359322-20170325020008

We don't even know if the [King] Piece is manufactured in the same way as the other Evil Pieces. For all we know Ajuka may have created the [King] Piece first but deem it too dangerous for use and ban it. Don't forget, the [King] Piece isn't some miraculous piece like the Mutation Pieces, it's a dangerous piece that can kill the user.

Also please stop it with the King promotion thing, Pawns don't promote to King in a chess game. The EP are based on chess, it won't happen. If it were to happen Ishibumi would have done that instead of creating DxD, ExE and AxA.