Shinkon dakedo Captain no Kanojo to wa Mada Yarenai

Story

Yuto is an ordinary young man married to Asuka, a star volleyball player. On the surface, Asuka is an athletic superstar, but her true nature in private with Yuto is more like a spoiled little girl, clinging to him in a way that would make her fans swoon!! What’s more, due to her stressful career, she has a strong libido and she can’t wait to jump Yuto at every opportunity!! However, with a major tournament approaching, Asuka fears that getting pregnant now would cause trouble, so Yuto has to be the one to put on the brakes.

Synopsis via AniList (English).