青函 せいかんトンネル記念 きねん かん せんだったら
seikantonnerukinenkansendattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 青函トンネル記念館線

1. If it were the Seikan Tunnel Memorial Line…; If the Seikan Tunnel Memorial Line existed…

Tara Conditional
Business