Jackob Grey, a man with black hair and gray eyes, is about 187cm tall Jackob has a half-sister, Jackob doesn't like his half-sister because she always acts arbitrarily, Jackob also has a stubborn and indifferent attitude, he always wants to be respected and appreciated, Jackob doesn't like his half-sister to contradict his words, Jackob also always acts firmly in front of his half-sister, even so Jackob also still has affection and concern for his younger brother.