What do you think about this manga?
The story goes like this:
Fujiyama-san is 181 cm (Approx. 5' 11'') and she is the ace player for her school's volleyball team. Kanba-kun is 160 cm (Approx. 5' 3") and has known Fujiyama since their preschool years. With his prankster friends, Kanba peaks into the girl's locker room right when Fujiyama is undressing. From then on, he could not get the image of Fujiyama out of his mind, so he decides to ask her out. She says yes. Enjoy their naive and secretive relationship as Kanba ogles his tall girlfriend in many different situations.
Be aware, it's a bit Ecchi 