Tenshuu Yashiro sits on death row for killing his lover and four others. On his execution day a shadowy group offers him a choice: die as scheduled or join them. He takes the deal and is led to a sealed room where, through a window, he watches a young woman wake up host to a strange parasite that grants terrible power while consuming the person it inhabits. This is a single-volume work by Tsutomu Takahashi.