Tomoki Kakegawa is a second-year student at Fukuhou Technical High School. He actively participates on the school's boys' volleyball team, serving as their setter and donning jersey number 11. His height is 175 centimeters. The kanji composing his given name Tomoki signify "wisdom, intellect" (智) and "chronicle" (紀), while his surname Kakegawa combines characters meaning "hang, suspend, depend, arrive at, tax, pour" (掛) and "river, stream" (川).