Hiori yo, he has a younger sister who he loves very much. But for some reason, Hiori's parents were always fighting and it made him sick. Actually, since when Hiori was little, his parents were always fighting. And when him little sister was born, his parents started fighting more often. But Hiori didn't want his little sister to feel the same thing happened to his little sister, so he always pretended to be fine in front of his little sister.