Akai is another attempt to bring Harbord street to life and have a nice, way more quieter alternative to the Annex madness.
It just partially achieves so though. Of course, if you are thinking to go to trashy Bloor street sushi bars, please go here instead. It's still a nice alternative just one block south. The place is small and cozy and the service is always super-polite.
Don't expect to be enlightened by the taste. The salmon/tuna are regularly fresh, some very interesting rolls are offered (my favorite is the "crunch", could eat 5 of those!) and every possible modification of the menu is accepted. On the subjective side I find the rolls too small so I always have to spend more $$ to get full. I still keep coming back there from time to time when a good old sushi craving hits me.