"Sleep priestess lie in peace. If you cry the boat you'll ride the last trip to the other side. Once you get there sacred marks you'll bear. They shall be peeled off should you fail to lie still..."
Tsuzuki was devastated. Without Hisoka life held no meaning for him. He didn't want to be without the young empath. He didn't know what to do or how to save Hisoka and he didn't think he'd ever be able to save him anyway. Hisoka was an empty shell right now and Tsuzuki knew that he had caused part of it, that he had hurt the boy in Kyoto no-one else was to blame but him. He felt like a failure of a partner he was supposed to protect Hisoka.
Tsuzuki decided he should let Konoe know about it he wasn't looking forward to his anger at him letting another partner go but they had to know because Akiko Kaori had a dangerous plan. A Shinigami opening the door to the spirit world to call back spirits was a unforgivable crime and Hisoka would end up facing the consequences for it even if it wasn't him consciously. Tsuzuki couldn't allow that and he had to save Hisoka no matter what.
Tsuzuki had been hearing someone trying to communicate with him, it wasn't Hisoka it was a female voice. Unlike Kaori this woman's voice was calm and gentle. Tsuzuki saw her too she was a young woman between 17 or 18 and she was dressed in a school uniform. Tsuzuki knew who she was, she was the recent victim before Hisoka to be possessed by Kaori but she had never made it to be able to summon the spirits. Her body slowly shut down from the pressure of being controlled by a spirit. Her name was Chidori Tomoyo.
Chidori Tomoyo had been dared to enter the Akiko mansion by her friends. They all promised they would wait outside for her but instead when she went in there they ran away and left her alone to suffer. Tomoyo also nearly got involved in the cleansing ritual but she'd managed to narrowly escape it. Kaori had been avoiding the cleansing for all her afterlife and she escaped it when she was alive Tsuzuki learned from Tomoyo.
Tsuzuki found out that the son of the Midori family, Kei who was Kaori's fiancé had been found in the forest brutally murdered. The villagers pointed their fingers at the Akiko family believing that Kaori had killed him for his money and possessions. The Midori family had begun a vicious onslaught on all the members of the family. But Kaori survived the attack and began her own attack for revenge. The Ruka shrine maidens Ami and Ayumu had to perform several cleansings on the Midori family and they tried to cleanse Kaori but she wouldn't have any of it.
Kaori escaped from the cleansing ritual and ended her life by jumping off the cliff. As she fell she cursed the village and returned in the afterlife as a vengeful ghost. She now sought out the rest of her family members so she could finally complete her revenge. This meant opening the door in the Ruka shrine and bringing them back which is why so many innocent people had died. And now Hisoka had been possessed and with him she had more of a chance at completing her revenge because of Hisoka's powers.
Tomoyo wanted to help Tsuzuki because she couldn't bear seeing someone else get hurt in this manner. If she couldn't survive one ghost possessing her and opening the door she couldn't even begin to imagine what it would be like to have all the Akiko family members taking over her body and because of Hisoka's empathy he was very likely to overload at the sheer amount of anger that was inside the Akiko family.
Tomoyo and Tsuzuki were going to stop this they were going to put an end to the disaster they had to Tsuzuki's love was in danger and he couldn't lose him. They would work together along with the Ruka family to stop Kaori. Even though Tsuzuki would most likely have to fight Hisoka he wanted to do anything to save him no matter what he knew what his goal in life was his goal was to always protect Hisoka no matter what...