Two questions come to mind. One, why are you firing a coach after only 12 games? After the initial 3 game stumble, the team has turned it around to grab a respectable 15 points in 9 games. Considering the team is built around very young talent and old retreads, I'm not sure what Cerezo was actually expecting. They were a mid-table level team with mid-table talent and SURPRISE, they are mid-table.
Two, How could this affect Verdy? Well, if Satoshi Tsunami is fired, there is a possibility that he and not Hashiratani takes over as the man in charge. His resume and experience is more extensive than Hashiratani so he seemingly would be a more reasonable choice for a team in turmoil. Was there some cooperation between the Cerezo front office and Verdy in orchestrating a coach swap? Probably not, but it makes you wonder about the timing of Cerezo changing coaches this early in a guys tenure.
At the very least, I expect Tsunami will rejoin the squad in some sort of role if he is actually relieved of duties at Cerezo.