TV-Series
Description
Masahiko's life is defined by a childhood trauma that forged a deeply personal vow. Injured as a boy, he was rescued by a beautiful woman, leaving him with an idealized, obsessive memory of her. This fixation leads him to swear he will preserve his virginity until he finds her again, though her identity remains unclear.

His world shifts with the arrival of Shu Fong Lee, a childhood acquaintance from America, who comes to study karate under his father. Fong Lee initially views Masahiko negatively due to his disinterest in karate, but her opinion changes dramatically after he saves her from a gang of rapists. Their friendship deepens, and Masahiko begins practicing karate, suspecting Fong Lee might be the woman from his memory. However, she departs unexpectedly for America, revealing at the airport she is not that woman while confessing her feelings for him.

After Fong Lee's departure, Masahiko gains popularity at school. He attracts the attention of Aoi Tsutsuse, a schoolgirl who aggressively pursues him. They engage in oral sex in a public cinema, though Masahiko later rejects her romantic advances. Despite this rejection, a subsequent encounter leads to further intimate contact after she masturbates in front of him; he participates but does not escalate beyond oral sex. Concurrently, his teacher, Mrs. Hanako, obtains a sperm sample from him under the pretense of collecting genetic material from high-achieving students. Masahiko also discovers his father engaged in bondage with Mrs. Hanako in the dojo.

During a skiing trip with Kyoko Saeki—a family friend living next door who assists his household—Kyoko's younger sister Asuka confesses her love for Masahiko. He rejects her, explaining his ongoing search for the woman from his memory. Asuka realizes Kyoko is the woman he seeks and sacrifices her own feelings to facilitate their union. This revelation allows Masahiko to understand that Kyoko, who has been a constant presence helping his household since his mother's death, is the woman he has been searching for. The story concludes with them consummating their relationship, fulfilling his vow.

Jealousy initially colors Kyoko's interactions with Masahiko, particularly regarding his closeness with Fong Lee, who temporarily took over household duties. This dynamic shifts as the truth emerges about their shared past.