Ao wa Kataku Haru wa Yasushi

She is a 26-year old woman, who has been working for 8 years, but still living at home.

When she suddenly loses her job, she decides to enroll in a college in Tokyo for a change of pace, in the name of "self-discovery." What awaits her there is a love affair (?) with a mysterious boy who's barely 18.

(Source: Pixiv Sylph, translated)