Dora! Dora! Dora

Tetsuya was mourning his parting with Boshu when an uninvited guest came through the door. Tetsuya proceeded to challenge this gambler who called himself Dora Bomb Taka. Every time Taka wins a hand, his Dora Bomb strikes with devastating accuracy! But as soon as Tetsuya realized the Dora Bomb was a stacking technique, he devised a plan to counter it by making use of Taka's single wait. What was the secret order Tetsuya gave to Danchi?