Seibu
Seibu was a location on Earth, which was home to a baseball team in the Planetary Baseball League in the 21st century. Buck Bokai played for Seibu in 2023 and 2024 after being acquired from the  club. The following year, Bokai went on to play for the London Kings.

This locale was listed in Bokai's career stats on his baseball card. ( Season 1 prop art)

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fr:Seibu
ja:西武
Earth locations