"Mom, is this your younger brother?" A little girl said to Kirihara's mother next to her in an innocent and childish voice. "Well, that's right. Remember, his name is Kirihara Akaya, and he is your brother. You must take good care of him in the future and don't bully him." Kirihara's mother said in a kind tone, but also with a kind of sadness. "Well, I will take good care of him." The little girl said with confidence. The woman next to her smiled softly after hearing this, but there was deep sadness in her eyes...