Kari Yagami, known as Kari Kamiya in English-language media, is the younger sister of Taichi Yagami and a Chosen Child partnered with Tailmon (Gatomon). She embodies the Crest of Light, representing purity and life energy, granting healing abilities while creating vulnerability to darkness. Her strong willpower, bolstered by her friendship with Yolei Inoue during Digimon Adventure 02, helps her resist this vulnerability. Her personality is defined by compassion and selflessness. She often prioritizes others' well-being over her own, suppressing her pain or discomfort to avoid burdening them—a trait stemming from childhood experiences, including concealing pneumonia symptoms until collapsing. Despite this, she exhibits cheerfulness and assertiveness when defending others or opposing injustice. Her connection to life grants intuitive understanding and empathy toward all beings, including antagonists like BlackWarGreymon. Kari experienced early exposure to the Digital World. In 1995, at age three, she witnessed a Digitama emerge from her family computer, hatching into Botamon and evolving into Koromon and Agumon. During an incident involving Parrotmon, her whistle revived Agumon, leading her family to relocate to Odaiba. As a child, she frequently fell ill but demonstrated resilience, recovering from critical pneumonia after Tai took her outside. Identified as the eighth Chosen Child in Digimon Adventure, Kari was targeted by Myotismon. Her partner Tailmon initially served Myotismon but defected upon discovering their bond. Kari's light-based abilities proved instrumental against threats like the Dark Masters and Apocalymon. In Digimon Adventure 02, she developed an interest in photography and aided a new generation of Chosen Children. Receiving the Digimental of Light enabled Tailmon to armor-digivolve into Nefertimon. She faced psychological manipulation from Dagomon's forces in the World of Darkness but overcame it with friends' support. These experiences highlighted her shared vulnerability with Ken Ichijouji, reinforcing her reliance on camaraderie. In Digimon Adventure tri., Kari attended Odaiba Junior High School. Her emotional sensitivity and bond with Tai made her a target for Dark Gennai, who exploited her distress over Tai's apparent death to catalyze Ordinemon's creation, underscoring her ongoing struggle with darkness. By Digimon Adventure: Last Evolution Kizuna, set in 2010, Kari was a first-year student at a women's junior college specializing in preschool education. While her interactions with Tai decreased after he moved out, they collaborated during Digimon-related incidents. She worked part-time at a daycare center, advancing toward her goal of becoming a kindergarten teacher. During the Eosmon crisis, she was targeted while teaching but later aided in neutralizing the threat. In the epilogue, by 2027, Kari achieved her dream as a kindergarten teacher and started a family. She planned to establish a kindergarten in the Digital World where humans and Digimon could learn together, inviting Tailmon to serve as a counselor. By 2028, she had a son who partnered with a Plotmon and maintained connections with other Chosen Children. Her appearance evolved from childhood to adulthood, her hair growing longer and her style maturing.