Also referred to as "The Imperial Pair" the Tezuka and Atobe pairing is from The Prince of Tennis.
Tezuka is (in the original program) the captain of the Seigaku tennis team and is widely acknowledged as one of the best players among his peers. Atobe is the captain of Hyotei Gakuen and has the nickname of "king" and "ore-sama" and is very popular at his school.
There is respect between the two characters who are rivals. They both want their opponents to play their best and will stubbornly go for the win. There seems to be a companionship between them and an understanding.