少年 しょうねん あい嗜好 しこうだったら
shōnen'ai shikōdattara

Noun
Da Copula

The "-tara" conditional form ("if/when…") of 少年愛嗜好

1. If/when [he] was a boy who liked/loved hobbies.; If [he] had been a boy who liked/loved hobbies.

Tara Conditional