The GF and I went to Kokyo Sushi at Yonge/Alexander last Friday night, randomly, and noticed they had Blue Fin Tuna in (wild blue fin, I may add). Just before that supply ran out, in just under 2 days, we snagged a couple pieces of otoro. Good God, what have I been missing out on?!?! I would eat a whole plate of that stuff every week if I could afford it and if it were available to me.
Anyways, they said - not surprisingly - they only get it in a few times a year but the next would be on a weekend before christmas sometime.