Kenji is the second son of three brothers. To his mother Minami, he was always the child who didn't need much attention... One spring, his older brother moved out for work, his younger brother entered a boarding school, and his father was transferred alone. Their once lively home suddenly became quiet, and Minami felt a strong sense of loss... Seeing his mother's state, Kenji felt regret and emptiness from always being overlooked compared to his brothers, and decided to monopolize his mother's love...