When he was ready (clean shirt and socks, both very important for dates I'm sure), Sherlock went outside and knocked on the door...because he remembered Lestrade saying it didn't count as a proper date otherwise...
He must've gone online looking for places to go, because he had the address written down to give to the taxi driver. I was not allowed to see it in advance, and I was...mildly concerned about where we'd end up. But it was, to my relief, a perfectly ordinary Japanese restaurant - or mainly ordinary.
He said he was looking for sea urchin sushi and found this place instead (I'd link but they don't seem to have a website). They do okonomiyaki, which is sort of...a cross between an omelet and a pizza? I'd never had it before, but it was quite good. You get to pick what goes in it, and, most important to Sherlock, they cook it right in front of you. Here's a picture of mine being cooked:
We also had a few bits of sushi while it was cooking, but not sea urchin. Sherlock told the waiter we were on a date. The man cooking our okonomiyaki said he was from Hokkaido, and Sherlock asked him many questions about it. Sherlock also told him we were on a date, which caused...a bit of confusion.
Having traumatised the staff, we headed out for... Oh, wait, I'm forgetting.
At the end of the meal, Sherlock produced L's bank card from his pocket and said he would pay... He swore L gave it to him of his own free will, so I let him. I have no idea what the waiter thought, but he looked amused.
We went to have liquid nitrogen ice cream - chocolate for him, and blueberry muffin for me. Had a nice walk, discussed various things, such as why bananas grow upside down (it's probably the right way up from the banana's perspective), the point of the Olympics, and why they shouldn't give misleading information on QI (Stephen Fry is still in his bad books over the bronze sky incident).
We came home, and he presented me with a somewhat wilted collection of reeds and grasses, which he forgot to give me before we left. He said he thought they'd be better than flowers because they came from the pond we built and that he was careful to take all the bugs off and leave them at school.
He's so sweet sometimes it amazes me.