If nepotism was a person, this would be the guy. Shimizu is just another smug-ass backstabbing weasel, not different from many others in the Omi Alliance, with no notable influence to his name.

He then found himself rising up the ranks, quickly and effortlessly, thanks to the newly inducted "Homare Nishitani the Third", who had begun mass executions of the Kijin Clan's older members and those who either questioned this new Nishitani, or remained loyal to the first one from the 80s. Through pure cronyism alone, Shimizu was appointed by Nishitani the Third as his new captain and right-hand man.

With his ascension up the chain of command, this scumbag wastes no opportunity to push around even his superiors of the Omi, with Nishitani III and the Kijin Clan growing into a major influence and bread-winner for the organization... That would be until he got his ass kicked outside Yokobori Golf Center in 2019 in a failed attempt to stall the mysterious agent "Joryu" from confronting Nishitani III at the Kijin Clan's headquarters.