"Kanamemo" centers around Kana Nakamichi, a 13-year-old girl who finds herself alone after her grandmother passes away. Struggling to cope with her loss and facing financial difficulties, Kana is taken in by the staff of the local newspaper delivery service, Yamagami News. The series explores her adjustment to this new life as she becomes part of the quirky and diverse team working at the newspaper.

The Yamagami News team includes a range of characters, each with distinct personalities and roles. Mika Kujiin, the manager, is a hardworking and responsible figure who often acts as a maternal figure to the group. Saki Amano, a delivery girl, is cheerful and energetic, while Yume Kitaoka, another employee, is more reserved and introspective. Haruka Nishida, the youngest member aside from Kana, is mischievous and playful, often adding humor to the group dynamic. Hinata Azuma, a shy and timid girl, rounds out the main cast, contributing to the series' exploration of interpersonal relationships and personal growth.

As Kana settles into her new environment, the narrative delves into her interactions with the Yamagami News team, highlighting both comedic and heartfelt moments. The series balances slice-of-life elements with lighthearted humor, often focusing on the daily challenges and camaraderie of the group. Kana's journey involves adapting to her new responsibilities, forming bonds with her coworkers, and gradually finding a sense of belonging.

The plot also touches on themes of family, resilience, and the importance of community. Through various episodic storylines, the characters face personal struggles, celebrate small victories, and support one another, creating a warm and engaging narrative. While the series maintains a predominantly light-hearted tone, it occasionally addresses more serious topics, such as loss and self-discovery, adding depth to its portrayal of the characters' lives.

Overall, "Kanamemo" presents a charming and relatable story of a young girl navigating a new chapter in her life, surrounded by a cast of endearing characters. The series emphasizes the value of friendship and the strength found in shared experiences, making it a heartfelt addition to the slice-of-life genre.