Fox Demon Heart Seeker

Ulquiorra Cifer, a very loyal and powerful Hollow, a "king", he was unable to understand human emotions from beginning to end. He was always lonely and nihilistic. He wanted to know what the "heart" was, but he could not fully understand what "heart" and "emotion" were until his death. He was supposed to die and return to nothingness, but this time he would not die, but live, live well in this passionate world called the world of the fox demon and the little matchmaker, explore human feelings and hearts, feel the feelings and hearts, until there is no more nothingness! (PS1: To clarify, I have not re-edited the fox demon and the god of death. If there are any errors in details, please don't worry about it. Point it out and I will correct it. Thank you everyone!) (PS2: The single female protagonist is Rong Rong, so don't enter if you don't like it.)