I want to live here. I love this place.
Onnki is a very elongated but tiny place. Every seat is a bar seat. There are no tables. I thought it's really cute of them to adopt the Japanese fast food culture so well. They blast top 40 from their speakers.
I had a katsu don (fried pork cutlet on rice with fried egg) and my dude had an ebi don (garlic butter shrimp on rice with egg).
OOOOOOMG the katsu had the PERFECT ratio of batter and meat. The batter didn't fall or peel away. It stuck onto the meat and the meat was juicy. The way they seasoned the egg with nori was amazing too. Not too salty, a hint of pepper, and the nori elevates the taste to a complexity that can only be described as "sublime".
The shrimp was really good too! I mean, you can't go wrong with garlic butter, but it wasn't oily and you didn't feel like you had a coat of oil after eating. The egg was sunny side up, so mixing the egg in the rice really made it great because this egg was seasoned the same way.
DEF recommend this place. It's tiny and a little hidden in an alley, but it's great. Be ready to squeeze in next to a stranger and make a new friend because this place is tiny.