Kenji was born as the second son of three brothers. His mother, Rin, had the impression that he was quiet and shy, but... One spring, his older brother got a job and started living alone, while his younger brother started living at a boarding school. Their father moved away from his family, and Kenji and Rin began living alone. The lively house became quiet, and Rin felt a sense of loss... Seeing his mother like this, Kenji felt frustrated and empty at always worrying about his siblings, and he tried to receive all of his mother's love...