If you're looking for manga similar to 2.43: Seiin Koukou Danshi Volley-bu, you might like these titles.
Harutaka Kato, a 1st year student in Kakegawa high school with the extraordinary ability to jump. After seeing his ability, Maiko the volleyball club manager kept urging him to join the team. Finally, Harutaka was persuaded to enter the club. However, the volleyball club had another star, Yuta Kaneko! Harutaka was upset and tried to show off but all of his smash was blocked by Yuta!! So, what will Harutaka do!?
28-year-old Japanese national representative for volleyball, Nohara Suzuki, and Judo, Takaya Yano, are facing the same problem: they both just got dumped because they were too inexperienced in the world of physical relationships. So what do two over-achieving athletes decide to do? Practice, of course! And as Nohara and Takaya practice more and more, they may just find the ones they're practicing for...are each other.