The naval fleet headed by Shuuyu returns to Koutou, and most of the Son family are there to welcome Ryuubi. Ryuubi asks for Sonken, to which Sonshoukou replies he's at the castle. Ryuubi is happy that Sonken is willing to become an ally, although Sonshoukou shows little enthusiasm. At the castle, it is revealed that Sonken does not want to ally with Ryuubi at all, saying that at the moment, Sousou as no intention to attack Koutou. However, if the alliance is formed, Sousou will attack immediately, and Sonken wants to prevent that at all cost...