おうぶくろむささびなら
大袋鼯鼠なら
ōbuku romusasabinara

Noun
Da Copula

The "-nara" conditional form ("if/when…") of おおふくろももんが

1. If/when a giant flying squirrel…; As for a giant flying squirrel…

Nara Conditional
Usually Written in Kana