Arisa Ono is a single mother raising a child alone while attending a graduate school in Tokyo, keeping her situation a secret from everyone around her. However, a sudden incident exposes her secret, plunging her into an unexpectedly difficult crisis. Juggling childcare, housework, and her studies, she struggles to hold herself together, moving forward with determination and hope for the future. This poignant yet powerful story portrays her intense challenges and inner strength.