It is truly delightful when a friend suddenly treats you to lunch. However, it was a smart move on your part to photograph the menu and send it to your friend beforehand to finalize the choices; this saved a significant amount of time and prevented any unnecessary delays when ordering. You also spent some quality time chatting and having fun with your friends after the meal, which made the day even more enjoyable. That said, the struggle to find a bus on the way home after meeting your friend was certainly a bit of a hassle. Still, the most important thing is that you made it home safely in the end. You also really enjoyed playing badminton, despite feeling tired. I, too, believe that engaging in an activity we love even if it requires some effort brings a unique sense of joy and peace to our minds.