Kang Shin-Woo is a math teacher with a good looking appearance. He has not forgotten his first love Han Ji-Soo for the past 10 years. By an accident, he travels to the past when he was a high school student. There, he meets his younger self. Kang Shin-Woo struggles to make the younger Kang Shin-Woo's love come true.

When Takuma Kakinouchi was 8-years-old, he spent time in the hospital. He made friends with Mayu Taneda who was the same age as him. One day, they got out of the hospital and visited a park. There, Takuma Kakinouchi and Mayu Taneda promised that they would marry each other. They had no doubt that they would have a future together. 7 years later, Takuma Kakinouchi entered a prestigious high school at the age of 15. During the high school welcoming ceremony, a female freshman representative goes up to the platform. Takuma Kakinouchi is shocked to see that the girl is Mayu Taneda. Just so she could be with Takuma Kakinouchi, Mayu Taneda studied extremely hard to enter the same prestigious high school. Takuma Kakinouchi has tried to avoid her, even though he loves her. When he was younger, he heard how long he would live.

When a telecom executive develops face blindness, he mistakes his secretary for a wealthy heiress -- which she allows to get out of hand.

This is an older four episode light hentai anime that was originally released in 1995. The first two episodes were brought out in English under the title of "First Loves" and bears no relationship to the "Elf version Kakyuusei OAV" and "Kakyuusei TV series" that were released in 1997-1998 and 1999 respectively. First Loves/Kakyuusei OAV (1995) is mainly centered on Kakeru and his relationship with four girls from his high school. It focuses on one girl per episode - the cute and friendly Urara in the first, the forsaken tennis girl Rie in the second, the dog-owning painter Hikari in the third and the tough-fighting motorcycle girl in the final episode. Which girl will Kakeru choose to be with by the end of the fourth episode?

On the way back to his childhood home, a septuagenarian man recalls his childhood and adolescence, in particular his love for a young woman.