As Aki adjusts to high-school routines alongside his older sister, their daily interactions grow more charged with unspoken affection. She maintains her polished image as a capable office lady, yet her private worries about him deepen with each passing evening at home. Quiet conversations and lingering glances reveal the strain she feels beneath her responsible demeanor, drawing them toward an emotional crossroads. In this episode, the possibility of crossing familiar lines hangs delicately between them.
