Yuji was born as the second son in a family with three brothers. His mother, Momoko, was impressed that he was a child who was quiet and did not assert himself, but ... In a spring, the brother went to work and lived alone, while his younger brother went to the boarding school to continue playing baseball. His father moved away from home and his life changed in a hurry, Yuji and Momoko began to live with their mother and child. Momoko felt lost when the bustling house suddenly became quiet. Seeing his mother like that, Yuji felt disappointed and empty, he tried to regain his mother's love, something he could not monopolize until now.