The novel centers on two old friends, Natsuko Sakurai and Noe Oota. Both women are single and in their mid-50s, and have remained steadfast friends since childhood, supporting each other while still living in the apartment complex where they both grew up. Natsuko makes a living as an illustrator while buying and selling items online. Noe works a stressful job as a part-time college lecturer.
(Source: Anime News Network)
— Description from AniList community (anilist.co).