Internet King: This System Is Not Serious

In this world where tennis is king, let Killer Tennis give you a little shock. Oh! This tennis ball actually flies by itself, it's so cool! It's unbelievable that this tennis ball doesn't jump, but rolls backwards. What does it mean to be perfect? What is this Asura Shinto? Could it be that all these years, my tennis playing has been in vain. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.