A reclusive, lazy manga artist and her impulsive, carefree editor—both women in their late thirties—suddenly realize they have reached the halfway point of their lives. The thought of continuing as they have been fills them with unease about the future. Money, health, beauty, and family: all the subjects they had put off become urgent. So the duo decides to take on these challenges head-on, tackling everything from insurance basics and retirement investing (NISA, iDeCo) to colorectal cancer screenings, cosmetic medicine, and even the logistics of arranging end-of-life care for their aging parents. The manga artist, who tends to stay home and avoid effort, is pushed by her editor, who has no long-term plan but is always ready to try something new. Together they stumble through personal training, eye-care checkups, a trip to Mongolia, and a search for new hobbies—learning, failing, and laughing along the way. The story is a comedic, firsthand essay series that blends practical information with the worries and small joys of growing older.