Haikyuu!! is a Japanese manga series written and illustrated by Haruichi Furudate. The story follows Shoyo Hinata, a boy determined to become a great volleyball player despite his small stature. Shōyō Hinata, after seeing a volleyball match, aims to become the next "Little Giant" and thus joins his middle school volleyball club. After finding new members, he sets out for the middle school tournament, where he crosses paths with a formidable school with the "King of the Upper Court," Tobio Kageyama. Although his team lost, Hinata is still determined to aim for the top and exact revenge on Kageyama. Upon entering high school, he receives the biggest surprise: He and Kageyama are in the same high school volleyball club!

Shōyō Hinata is the main protagonist of the Haikyū!! series by Haruichi Furudate. For the majority of the series, Hinata was a first-year student at Karasuno High. He was one of the middle blockers for the Boys' Volleyball Team. Upon entering the first-year of high school, Hinata stood at 162.8 cm and grew to 164.2 cm halfway through the school year. He is the second shortest person on the Karasuno volleyball team, next to Nishinoya. He has unruly orange hair and brown eyes. His relatively thin build and short stature often lead him to be mistaken for a junior high (or, in some cases, even grade school) student.

(from Wikipedia and Haikyuu!! Wiki)