兄弟 きょうだい だったら
kyō daishidattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 兄弟子

1. If/When (I/you/he/she/it/we/they) were/am/is/are brothers/siblings.; If (I/you/he/she/it/we/they) were/am/is/are fellow disciples.

Tara Conditional