Kanata Ozora, a 6th-grade student at Aibo Academy, gained fame as a genius with perfect scores in academics, sports, and Buddyfighting. His unmatched skills earned him the nickname "No-Damage Fighter" for never losing a life point, yet this perfection led to profound loneliness and disillusionment, causing him to quit Buddyfighting entirely due to a lack of challenging opponents. His sole companion during this period was his buddy monster, Quintessence Crystal Dragon, Athora. Tasuku Ryuenji approached Kanata to represent Star Dragon World in the World Buddy Masters tournament after Tasuku's Buddy Police duties prevented his participation. Kanata refused initially, but after losing a penalty challenge to Gao Mikado, he agreed to a qualifying match against Tasuku. Kanata defeated Tasuku without taking damage, reigniting his competitive spirit and leading him to accept the role as Star Dragon World's representative. During the World Buddy Masters, Kanata maintained his no-damage streak against opponents like Togari Togeyama, Shosetsu Kirisame, Dai Kaido, and Gaito Kurouzu. In the finals against Gao Mikado, Gao and Batzz destroyed Athora and inflicted Kanata's first-ever damage. Kanata welcomed the loss with excitement rather than disappointment. Though he staged a strong comeback, he ultimately accepted defeat, marking his first official loss and teaching him the value of disappointment, which deepened his appreciation for challenging fights. After the tournament, Wisdom attempted to recruit Kanata, but Kanata refused and challenged him instead. The Buddyfight evoked intense anger in Kanata, culminating in his defeat by Wisdom. Later, during a training camp, Kanata and Athora received guidance from Guru Bunbuku to strengthen their bond, prompting introspection about their partnership. This intensified when Kanata encountered Keisetsu of the Sword Arts, a figure from his past. A flashback revealed Keisetsu as Kanata's first Buddyfight opponent; after defeating Keisetsu without damage, Kanata quit Buddyfighting due to the emotional fallout. In their reunion, Kanata lost to Keisetsu initially but later defeated him in a rematch using the new Impact technique "Direct Dynamic Diamond Overhead!!", restoring his confidence and commitment. Kanata continued significant matches, defeating Gao Mikado in episode 40 using Thunder Empire buddies and overcoming Sakate Onigashira in episode 50 to aid Gao's team. He participated in the Gao Genuine Gameface Tournament (GGG Cup), losing to Gao in episode 54. His fighting style consistently involved equipping "Crystal Spikes" and "Crystal Greaves", often declaring "It's kick-off time" or "Now it's kick-off time!" upon activation. His relationship with Athora evolved from tactical reliance to a profound emotional connection, emphasizing mutual growth and resilience.