Hikari Yagami, also known as Kari Kamiya in the English adaptation, is a key character in the Digimon Adventure series. She is the younger sister of Taichi Yagami and is partnered with the Digimon Tailmon (Gatomon). Hikari is known for her gentle and kind-hearted nature, often serving as the moral compass for her friends. Her role in the series is pivotal, as her connection with Tailmon and her crest of Light play crucial parts in the group's battle against darkness. Hikari's character embodies purity and hope, often inspiring those around her.