I understood that his interest was not going sightseeing but selecting souvenirs for the family. I saw him happily hanging around gift shops. What a nice and generous son, although I paid for all the presents that he chose.
One memorable moment I would not forget was the dinner, a full course of French, at the hotel Marriott, in which all he ate was bread and desserts because he is a picky eater. It would be interesting if Kosuke became a gourmet in the future.