During spring break at the end of her first year of high school, Ito discovers she has to move because her mother is remarrying. What she didn't expect was to suddenly gain four younger stepbrothers living under the same roof. Determined to get along with her new family, Ito tries her best to adjust, but the eldest brother, Gen, is distant and difficult to understand. However, as they spend more time together, she begins to notice hints of kindness beneath his cool demeanor. (Source: MAL News)