Konna Mirai wa Kiitenai

Kayo is a 17-year-old high school student. One day, Kayo from the future appears in front of 17-year-old Kayo. Kayo from future tells her that she is 30-years-old, single and still a virgin. 17-year-old Kayo is stunned. To change her future, 17-year-old Kayo begins to take action. (Source: AsianWiki )