Mai's world shifts when her baby brother arrives home. The Kazuki household settles into a new rhythm with the infant's cries, midnight feedings, and the quiet moments that follow. Mai watches her family adapt to this unexpected addition, each member finding their place in the rearranged dynamic. Her own feelings about becoming a older sister remain tangled between excitement and uncertainty as she navigates what this change means for her. Throughout an ordinary day that somehow feels monumental, Mai, her brother, and their friend Shou experience small moments of connection and discovery. The domestic routines that once seemed routine now carry different weight. As evening approaches and the day's events settle, Emi prepares for another performance, her music career continuing alongside these shifting personal circumstances. This short story captures how life's biggest changes often arrive quietly, reshaping relationships and perspectives in ways both immediate and lasting. Family becomes something different when new life enters it, and everyone learns to hold space for both who they were and who they're becoming.