東部 とうぶ丘陵 きゅうりょう せんであれば
tōbukyūryōsendeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 東部丘陵線

1. If it were the Higashibukyo Line; If the Higashibukyo Line existed

Ba Conditional
Business