A girl seriously intent on marriage starts a random affair

Mio's life rules stated: get married by 28, give birth by 30. However, fate had other plans. Therefore, in a panic over her single status, she decides to get married this year at any cost. Thus, on the advice of a friend who had instantly gotten engaged after a one-night stand, Mio decides to repeat her experience. But everything goes off plan… And instead of one candidate, she is surrounded by two: Hinatsu – charismatic, seeking casual relationships, and Yasunaga – a mysterious handsome man with a dark past.