He has a dark ginger hair, and slanted, dark brown hooded eyes. He is very tall for a second-year, and has a considerably large build. He can usually be seen with a flat expression or scowl.
He doesn't talk to his teammates very often, and appears mostly emotionless, only looking annoyed on occasion. He is generally seen to be a competitive person, cheering every time he scores, and crying upon his team's loss to Karasuno. His upperclassmen have implied that Kawanishi is uncertain about himself or his abilities, with Ushijima telling him to gain more confidence moving forward, and Tendō noting that he doesn't go for aerial battles unless he knows he can win.
Spring High Preliminary Arc
He doesn't seem to put much effort into his playing and sometimes accidentally lets a ball in; however, since he's a starting member in Shiratorizawa, his abilities shouldn't be too low. Tendō has noted that Kawanishi has an eclectic and more analytical blocking style, which the third year's a little annoyed by. His playstyle is stated by Tendō to be "omnivorous". Kawanishi primarily uses read blocking during matches, but, when he's in the zone, he switches to guess blocking. During their match against Karasuno, he demonstrated commit blocking against Hinata. It's been said that he doesn't fight battles he cannot win.
Due to Shiratorizawa's Spartan-like training regimen, Kawanishi, like most of the team, has an above average amount of stamina. He can play long matches without getting noticeably exhausted.
Kawanishi's high game sense and intelligence factors into his read blocking ability. After seeing Karasuno's synchronized attack once, he's able to break apart and shut down their subsequent attempt at another. When he's upfront, he directs the three-man blocks.
By National Finals, he became an unpredictable and accurate server, being able to serve at corners and the next one clipping over the net, where both being service aces.
Jumping Reach: 330 cm
Of all the Shiratorizawa regulars, Kawanishi appears to get along the best with Shirabu, most likely due to being in the same grade level. Shirabu is comfortable enough to call Kawanishi by his first name. After pulling off successful combo plays, the two are seen amicably high fiving each other throughout their match against Karasuno.
- Favorite Food: Sukiyaki
- Current Concern: My allergies may be acting up...
- His star sign is Aries
- His hair color is darker in the anime than the manga.
- Taichi (太一) - Big one
- Kawanishi (川西) - Western river