I love this anime... I'm glad I watched Love All Play before this one, otherwise I would be quite disappointed watching it. The excitement I felt watching Ryman compared to the other badminton anime is so different!
In addition, it's much more relatable since I'm also a working adult. You've mentioned the other stuff involved that affected their play like signs of aging lol... Still, it was fun... Seeing this post made me want to rewatch it with my mom. She hasn't seen this one yet. We're now rewatching The Prince of Tennis.. It's my third time, and her second time. hahaha xD