Combat Style: Pistol, Infiltration
Manga Debut: Chapter 31
Ban Yozakura is Keiko's husband and grandfather to the Yozakura kids. He's basically a legendary spy—the kind of guy who could slip in and out of anywhere, which meant he accumulated a ridiculous amount of intel over the decades and made just as many enemies along the way.
Before he married Keiko, Ban was pretty much a loner who only looked out for himself. He lived recklessly and didn't let anyone close. Keiko changed that for him, helping him break out of that destructive cycle and actually build a life with someone.
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