Kenji, the second son of a family of three brothers, was perceived by his mother, Rin, as a quiet and introspective child. However, one spring, his older brother started working and living alone, while his younger brother entered a boarding school. With his father away on a solo business trip, life took a sudden turn, leaving Kenji and Rin to live together. The once lively house became quiet, and Rin felt a sense of loss... Witnessing her mother's state, Kenji felt a mixture of resentment and emptiness, as if she was only concerned about her sons. He decided to accept his mother's affection solely for himself...