Uchi no Otoutodomo ga Sumimasen

A high school student named Ito Hazui moves in with her new stepfamily after her mother remarries during spring break. She becomes known as Ito Narita and is surprised to discover she now has four younger step-brothers. Struggling to adjust, she makes an effort to build relationships with them. The eldest, Gen, is initially distant but sometimes reveals a kinder side beneath his reserved demeanor.