"Kanamemo" centers around Kana Nakamichi, a 13-year-old girl who, after losing her grandmother—her only remaining family—finds herself alone and struggling to survive. Desperate and without resources, Kana is taken in by the employees of a local newspaper delivery service, which doubles as a quirky, makeshift family. The group includes a variety of eccentric characters, each with their own distinct personalities and backgrounds, who work together to deliver newspapers while navigating their daily lives.

The series explores Kana’s adjustment to her new life, as she learns to cope with her grief and adapt to the unconventional dynamics of her new home. The newspaper delivery team consists of Mika, the responsible and somewhat stern manager; Yume, a cheerful and energetic girl who becomes Kana’s close friend; Saki, a shy and reserved girl with a passion for photography; Haruka, a mischievous and flirtatious older girl; and Yuuki, a kind-hearted and slightly naive young man who often finds himself at the mercy of the others’ antics. Together, they form a tight-knit group that supports one another through both mundane and extraordinary challenges.

The narrative balances slice-of-life moments with comedic and emotional undertones, often highlighting the characters’ interactions and personal growth. Kana’s journey is central, as she gradually finds a sense of belonging and purpose within the group. The series also delves into the lives of the other characters, revealing their individual struggles, aspirations, and relationships, which add depth to the overall story. Themes of family, friendship, and resilience are woven throughout, as the characters navigate their shared experiences and forge meaningful connections. The tone shifts between lighthearted humor and poignant moments, creating a well-rounded portrayal of their lives.