Furumori, formerly known as Saeki, was originally a scientist working with the Society as a Lost Precious researcher. Furumori was tasked with reducing the activation time of Lost Precious and increasing their power and came to the conclusion that this could be achieved by implanting a Lost Precious into a human. When one of his researchers was seriously harmed during an experiment and the Society couldn't save her, Furumori went rogue.
Eventually, Furumori perfected the science and stole and entire collection of Lost Preciouses from a man named Makihara and kidnapped his daughter, Ai, as well. He implanted both himself and the girl with Lost Preciouses and raised her to be a Lost Precious thief.
Major Story Arcs
Attack of the Wolf & The Truth About Wolves
Furumori sends Ai to a Society gala where she is supposed to steal the Lost Preciouses of the people attending. She is able to retrieve most of them but fails to get True Love from Eriko Nanao. Refusing to leave the job undone, Ai breaks into Eriko and Ryuji's apartment where she is captured. Furumori rescues her, kidnaps Ryuji and brings them back to his base.
Ai uses True Love and discovers Furumori's real intentions and decides to leave him and escape with Ryuji. Furumori does battle with Ryuji and is eventually defeated.