Despite her mother abandoning her father, Satomi shows unwavering loyalty by staying at the family's stationery shop. Her father, who has become an otaku and lost his will to live, decides to close the store. But, Satomi implores him to transfer ownership to her. Yuuyake Rocket Pencil tells the tale of a primary-school student's struggle to run a shop alone, highlighting both difficulties and triumphs. As a bonus, the book includes two additional chapters.