Mushitarō Oguri

Mushitaro Oguri (小栗 虫太郎,) is a former member of the Rats in the House of the Dead. His ability is The Perfect Crime.

Appearance
Mushitaro is a young man with dark hair slicked over to the left of his forehead. The pupils of his yellow eyes consist of several rings. He is very expressive. He dresses sharply, wearing a neat, fitting suit.

Personality
Mushitaro is a somewhat stuck-up man who takes pride in his ability. He is not a particularly loyal member of the Rats, saying that it only serves to fulfill his own goals. For example, when he met Fyodor Dostoevsky, he demanded a base of operations all for himself, including a bookshelf with occult books and fine china tableware. He is a formidable opponent against Ranpo Edogawa due to his ability. However, he easily breaks when his old friend Yokomizo is brought to mind, even losing interest in the outside world since his friend's death.

He is interested in occult practices and occasionally blurts out sentences related to it. Contrary to his mystery writer friend, Mushitaro is quite disinterested in mystery novels. Nevertheless, he sometimes writes mystery stories (though he would struggle with it), thinking that he would find his dear friend appear to him during such times whenever he yearns for his company. He is also quite protective of his friend's posthumous reputation to his "ultimate mystery", doing whatever it takes to preserve the public's reception towards Yokomizo's final legacy entrusted to him.

Ability
Mushitaro's ability, The Perfect Crime (完全犯罪), allows him to erase any evidence of a crime perfectly. It takes the form of small, invisible creatures coming out of his body and tampering with objects. It can cause even a great detective like Ranpo to get stumped. Hence, he refers himself as the infallible "detective killer".

Background
In the past, Mushitaro befriended Yokomizo ever since their student days. Some time later, Yokomizo acquired gastric cancer, and they occasionally met to discuss his ultimate mystery before his nearing death. The two often argued with each other, as Yokomizo usually dismissed Mushitaro's suggestions and recommendations for his work. In the end, Yokomizo thought of the ultimate mystery by having the victim (himself) and the murderer to be accomplices, thereby asking Mushitaro to soon perform the role of the killer.

At some point, Mushitaro was held captive by the organization called the Seventh Agency that exploited his ability in order to cover up various crimes. Later on, Fyodor managed to break into his room after killing all the guards in order to set him free. In exchange for his freedom, Fyodor asked Mushitaro to help the Rats in the House of the Dead in their cannibalism strategy.

Mushitaro then agreed upon several conditions: first, that he neither will not appear on the front lines nor lift a hand; and second, Fyodor must provide a bookshelf, containing books about occultism and ancient alchemy and for all communication to be done via text messages. His hiding place must be comprised of a western-style house, far from the sea. Fyodor must provide him silver or white china tableware and starched clothes, and ultimately Fyodor must agree to assist in his escape to another country one week after the operation has done.

Around this time, Yokomizo had finished three volumes to what would be his final work. Mushitaro visited him to complete his ultimate mystery and strangled him in the inn he was staying in. As he killed his friend, Mushitaro wept openly and caused the final manuscript to get wet with his teardrops. Upon Yokomizo's death, he grabbed the manuscript and left the inn. However, realizing that forensics might analyze the ink blots and identify it as his tears, Mushitaro rushed to a nearby shop to replace the final page with the ink blot with a photocopy. He also hid the original copy somewhere in the shop to avoid it being found in his possession in case he would be searched. He then anonymously sold the manuscript to Edgar Allan Poe for ¥20 million. Later, he headed to a tower with a dummy bearing the face of the Rats' Cleaner, switched his shoes with it, and dropped it off the tower to instigate the falling murder case meant for Ranpo.

Appearances
{{Appearance
 * Chapters =

Decay of Angels Arc
}}
 * Chapter 54 - The Perfect Murder, The Perfect Killer, Part 1
 * Chapter 55 - The Perfect Murder, The Perfect Killer, Part 2
 * Chapter 56 - The Perfect Murder, The Perfect Killer, Part 3
 * Chapter 57 - Sunday Tragedy, Part 1
 * Chapter 59 - Dogs Hunt Dogs, Part 1 (cameo)
 * Chapter 63 - Enemies of Society (flashback)
 * Chapter 64 - You and I, Children of Sin (flashback)
 * Chapter 69 - The Escape
 * Chapter 70 - The Escape, Part 2
 * Chapter 78.5 - Mushitaro At That Time

Quotes

 * (To Fyodor Dostoevsky) "With tyrants and demons, I'll make deal with a demon. That's in my nature."
 * "Death. It's a spasm. Murder. It's the worship of the weak. I am the angel of murder, the king of criminals. Requeiscat in pace!"
 * (To Ranpo Edogawa) "The ethereal gate closed! It won't open again! I am the absolute infallible detective killer!"
 * (To Ranpo Edogawa and Edgar Allan Poe) "Kneel, detectives! I am the king of crime! No one can force me to sin and repent!"
 * (Referring to Yokomizo) "We argued so many times it was ingrained in my cells. Yokomizo, were you there the whole time? If I go into a locked room, will I always meet you?"

Etymology

 * The name Mushitarō means "insect" (虫) (mushi), "thick" (太) (ta) and "son" (郎) (rō).
 * The surname Oguri means "small" (小) (o) and "chestnut" (栗) (kuri/guri).

Trivia

 * The birthname of the real life is Eijirō Oguri (小栗 栄次郎).