How do I follow up with such opener?
"I think I know you" "I saw you" If she ignores ... If she asking "Where?" ... I suggest something like: I said "Saw your anime look on me back at the city center" If she says "I wasn't there for a long time" I respond "Kidding, but thats my impression of you" or "Never too late to experience that with me, do you like blue tea?"