Teekyuu 4  

Teekyuu 4th Season, Tekyuu 4, Te-kyu 4, Te-kyuu 4, てーきゅう4

What is the fourth season of Teekyuu about? Can you tell me more about this manga that inspired this anime? It follows four high school girls who are part of their school's tennis club. However, their tennis skills are not very impressive.