Hiroo Yamaguchi
山口寛雄
media.language: Japanese
__[Twitter](https://twitter.com/hiroobass)__
__Birthplace:__ Nagasaki Prefecture, Japan
__Nickname:__ ヒロくん (Hiro-kun)
__Hiroo Yamaguchi__ is a Japanese bassist, lyricist, composer, arranger and member of the band 100s (Hyaku-Shiki)
