Eating in a good place requires not only a good environment, but also delicious food, such as noodles, but Japanese food is better (just for example, there are many choices). In addition, be polite in the restaurant, always say thank you to the waiter and say goodbye when you leave.
Besides eating, you can also stroll around the street, buy your thin stick fireworks, watch Avatar (it's so beautiful), go to the game room to play Taigu Daren (choose the two-person cooperation mode), go to the disc shop, ask her what kind of movies and music she likes, and then talk about your hobbies.
Chocolate is not recommended as a gift, which is too suggestive. You can send simple little things, such as key chains, lovely thermos cups, gloves and so on. You know her, think for yourself. You can give it to her at will, but the gift should be intentional, not just a gift, but you should know her well.
Then some small suggestions: it is not recommended to make any ambiguous moves when eating for the first time, as long as you hold the idea that everyone will live comfortably and beautifully, and behave like a considerate gentleman.
When you get home, you can call her to say hello and talk about today.
Let's make an appointment next time. If you had done well last time, she would have said yes.