The female protagonist is a firefighter father who was framed by his adopted daughter. The male and female protagonists met in their second year of high school. The female protagonist didn't like the male protagonist at first, but later she fell in love with him because he sacrificed his life. Because the heroine's sister framed his father, the hero and heroine jointly went to investigate the fire that year. The investigation revealed that it was the sister, who fled to other areas. The hero and heroine met in autumn and got married in autumn.
Concept: autumn