I moved to Tokyo to attend university. My life alone was supposed to be full of hope, but before I knew it, it had become a colorless life with no one to talk to. Then, one day, Luisa, a single mother with a young daughter, moved into the room next door. For some reason, I couldn't leave her alone, watching her struggle to be a mother despite her small stature. It was supposed to be just a small favor, but when she smiled and said, "Thank you," it really touched my heart...