Middle-aged women become unlikely protagonists in other worlds in this anthology collection of five standalone short stories, each written and illustrated by a different creator. The volume is part of a larger hashtag-themed series marking the fortieth anniversary of the women's magazine JOUR, which explores the real lives behind the packaged labels of modern society. Under the theme "Isekai Obasan" (otherworldly middle-aged woman), the stories reimagine the isekai genre by centering on women past their youth, turning their experience, humor, and everyday frustrations into the engine of fantastical adventures.

In "ベテランメイド・大庭未紗子（52）は相談される" by まるかわ, fifty-two-year-old veteran maid Misaiko Oba uses her decades of domestic expertise to solve problems in a magical household. "世紀末夫婦" by 黒丸 follows a long-married couple navigating a post-apocalyptic world, their strained relationship tested by survival. "90年代ダイナーに憧れるオバさんが異世界転生した話" by マキヒロチ sends a woman obsessed with 1990s diner culture into a fantasy realm where she can finally open her dream restaurant. "転生したらホス狂いだった" by おざわゆき features Mizuki, a forty-year-old otaku who, after her husband throws away her beloved figure of a fictional character, reincarnates into a world where that character is a host club idol. "転生課のマチコさん" by 志村貴子 centers on Machiko, a woman who lost her sixteen-year-old daughter and now works in a mysterious office that handles reincarnation cases, leading her to a gentle confrontation with life and death.

Each story stands alone, sharing only the premise of a middle-aged woman crossing into another world, but the anthology collectively celebrates the resilience, desires, and reinvention of women often overlooked in both fantasy and society.