Originally they thought that their father had passed away more than 20 years ago, and he also accepted this fact, but he accidentally found his father again, and before leading his father to live a good life, his father left like this.
Yesterday, he was discussing with his father how their life would go after the surgery.
His father told him that after so many years, he really wanted to go back to Kyoto to pay homage to the deceased, and wanted to go back to his hometown to take a walk.