Yohei is one of Kyouko's underlings.
Yohei first connected with Kyouko during his high school years when she beat the crap out of him with a spiked bat for mistaking Yachiyo as her daughter.
Yohei is a character in both Wagnaria!! series, Working!!/Wagnaria!! and Working'!!/Wagnaria!! 2, published by Aniplex with animation production by A-1 Pictures and the 4-panel manga series Working!!, which is published by Square-Enix and serialized in Young Gangan magazine. His original design is credited to manga writer and illustrator Karino Takatsu while the anime version is credited to Shingo Adachi. Yohei first appears in the anime during episode #6 of the second series.