Kenta was born as the youngest of three siblings. His mother, Kiyoka, had the impression that he was a quiet boy who didn't assert himself... But one spring, his two older brothers started living on their own, and his father moved away from his family for work, and life changed drastically, leaving Kenta and Kiyoka to live alone. The lively house suddenly became quiet, and Kiyoka felt a sense of loss... Seeing his mother like that, Kenta felt lonely and regretful, and tried to get back the love of his mother that he had never had exclusive access to...