[Kei likes to talk about as much as the average eight-year-old. Shinji manages not to interrupt, somehow.]

If she didn't, she wouldn't have so many guests at her birthday party.

[A vague gesture to the rest of the party, where there are indeed a number of people. Though Shinji has no real idea how many are there for Minako.]

You're friends with my uncle? I've never met him before - Mom and Sakura's mom are sisters and Mom talks about her, but I don't know much about Sakura's dad. What's he like?

[Insatiable curiosity is a good trait of Shinji's except when it leads to talking about not-yet-apped NPCs.]