Kakizaki is a young man with ash blondIvy League hair and grey eyes. His uniform consists in a high-collared, zipped jacket in a bright persimmon color with matching headphones, a black undershirt, boots and dark brown pants (gray in the anime).
Kakizaki is quite friendly, demonstrated when he guided Yūma to the rank battle place despite being his upcoming opponent. He has a reputation of being overly cautious in combat, although Tokieda extols it as a quality and argues instead that Kakizaki has a tendency to shoulder all the responsibility himself. In fact, he has low confidence in himself, but high confidence in his teammates, and blames himself for their low position in the ranking.
Kakizaki cherishes his squadmates, whom he believes to be exceptionally talented, more than Border acknowledges. Although he was happy they decided to enlist in his unit, he still struggles to understand why they would choose to be by his side. He blames himself for the unit's low placement in the rankings and apologizes to them after their match against Tamakoma Second, but his teammates defend his leadership and he is both relieved and moved to see them suggest improvements and be invited to join them. His squadmates admire him deeply and defer to him when she speaks as their captain, but that does not prevent them from bantering when not strategizing. Ui refers to him by a nickname, implying closeness, while Teruya and Tomoe mostly call him "Captain" in combat. Kakizaki on the other hand appears to use their first names.
Kakizaki seems to be on good terms with the members of his former unit, with Satori calling him by a nickname and crying when he decided to leave,Haruka Ayatsuji finding an Operator for him as soon as he did, and Tokieda considering him one of his favorite senior members. Kakizaki admired Arashiyama but also felt inadequate when he compared himself to him. Arashiyama greeted him as a rival when he left.