The title refers to the unique magical mechanic of the series: the protagonist has a special condition/ability where conception can happen incredibly quickly (literally "in 7 seconds" in the title, though often used as hyperbole for the high success rate).
The series revolves around the intricate dynamics of seven high school students, each with their unique personalities, struggles, and motivations. As the story unfolds, the audience is taken on a journey through the ups and downs of these characters' lives, from the depths of their personal struggles to the triumphs of their relationships. koumi-jima shuu 7 de umeru mesu-
I’d be glad to rewrite this as a for your site if you clarify the intent. The title refers to the unique magical mechanic