Tamako wa Dame ni Naru Koto ni Shita

Tamako, 32, lives a steady life without drawing attention to herself. One day, she begins to think that romance doesn't suit her, until she meets a handsome young man, Yuma, at her workplace. Yuma turns out to be an old childhood friend of hers, and he immediately becomes attached to her! What's more, he asks her, "I don't have a place to stay, so can you let me stay with you for about a week?"...!? Suddenly, she's living with a man who keeps giving her money, and even having sex with him - this is not the right path for her! 32 years old and a second virgin, she begins a "restarting her life with a younger, worthless guy"!

(Source: Kodansha, translated)