Kana Higurashi has been childhood friends with Honoka Matsubara since their middle school days. Both remain teammates on their high school tennis team, sustaining their athletic connection across multiple years.

Her fondness for magical girl anime sparked after watching "Magical Girl Prism" with her younger sister Hina. This passion creates common ground with Karen Kujou, leading to frequent animated discussions about anime between them.

Around Honoka specifically, Kana often grounds conversations with logical perspectives, openly noting Honoka's more whimsical or excitable tendencies. This role as a counterbalance underscores Kana's observant and straightforward approach within their friendship dynamic.