Light, romantic, not dumb, exactly what you need during summer. Most characters had a purpose. It didn't make me cringe or want me to stop watching it. it made me wanna play badminton tbh. I loved almost every character out there, I recommend it.
The only things I might criticize is how obvious the story with Taejun's sister was , how the mom acted and how the older lady in the team was self-centered (she literally married another guy and had the audacity to be sad towards the guy that's been liking her for years).