Koshi Sugawara is a character from the anime series Haikyuu!!, where he plays a significant role as the vice-captain and substitute setter for the Karasuno High School volleyball team. Known for his supportive nature and strategic mindset, Sugawara is often seen as the heart of the team. Despite not being a regular starter, his presence is crucial both on and off the court, offering guidance and motivation to his teammates. Sugawara's determination and positive attitude make him a beloved character in the series.