Shachi

Shachi (シャチ, Shachi) is Fin Fennic's bodyguard and an alumnus of BLUE. He and Ron Kamonohashi used to be classmates.
==Physical description==
Shachi has light gray hair with a single red-dyed streak in the middle and black eyes. He wears a dark blue headband with the Union Jack on it. He has three piercings on each ear and black-painted fingernails.
When Shachi was still a student, he had shorter, neatly-cut hair and a fringe. He also did not have the red streak in his hair.
==Personality and traits==
==Biography==
===History===
Shachi's family has served the Fennic family for generations. Fin Fennic's father intended for the tradition to end with him. However, because Shachi's parents insisted on giving their young son to the Fennics, Shachi began to live at Fennic Manor and eventually became Fin's bodyguard and investigative partner.
===Bloody Field Trip Case===
Five years ago, Shachi was a student at BLUE. The day Ron Kamonohashi learned that he was chosen for the upcoming practical exercise, Shachi hung up assignments about unsolved locked room cases for Fin and gave one to Ron directly, on Ron's insistence.
Later that day, Shachi bought all the brown sugar syrup from the school store. Because of that, Ron sought him out and offered to purchase a package of brown sugar from Shachi. Shachi, however, refused to take his money and gave him a pack if he promised to stay away from Fin. Ron agreed because he, to Shachi's surprise, was not "charmed by her cuteness."
===Twin Prison Locked Room Murder Case===
After Juntaro Mihane's corpse is discovered in the Moon Prison seven years after his disappearance and ten years after someone was mysteriously murdered in the Sun Prison, Shachi and Fin Fennic head to the Okutama Mountains in Japan to investigate the case.
There, they meet Amamiya, Totomaru Isshiki, and Ron Kamonohashi. A cloaked Fin tells Amamiya that she will take over the investigation, and when shows her detective license and pulls down her hood, Amamiya and Ron recognize her as the world's expert on locked room studies and BLUE's locked room instructor.
While Fin talks with Amamiya about the case, Shachi approaches Ron and Toto as he recognized Ron. Shortly afterward, Fin joins them, and Ron suggests to her, for old times' sake, to compete with Toto to solve the Moon Prison's mystery, but she is uninterested. She informs him that she has heard of the rumor that he is illegally investigating and states that she will punish him without hesitation if the rumor is true.
Shachi wants to know Ron what he is doing here. Just when Ron replies that he is offering sweets to the officers, and Shachi asks if he can have some, Fin walks away, and Shachi has to hurry to catch up to her. However, Fin then stops and says that she has changed her mind about the competition and accepts it. Because Toto already examined the Moon Prison's interior, it is now her turn. With her Phoenix touch and Shachi's help, Fin thoroughly inspects everything and then declares, to Toto's and Ron's surprise and amazement, that she has solved the mystery.
Fin then gathers everyone to tell them what happened: Neither the culprit nor the corpse entered the prison in the last seven years. Juntaro's corpse was simply hidden behind a dummy wall made of foamed styrol. The blocks were likely connected via a cord that was threaded through the chimney; its end was stuck out of it and fixed to ensure that it did not slip back inside. The culprit never wanted anyone to discover Juntaro, but when they learned that his family was about to open the prison, they pulled on the string, lifting the blocks through the chimney and removing the dummy wall.
Fin deduced that there must have been a dummy wall because, in Kiyotaka's photo, the sunlight is striking a larger area of the wall than it does now. Therefore, two weeks ago, the wall was closer to the window than it was now. Furthermore, the murderer must be someone who knew the Sun Prison key was being delivered to Japan. Having solved the locked room's mystery, Shachi and Fin return to their guesthouse, leaving the Metro Police with the task of finding the culprit.
After Kaji's corpse is found in the Moon Prison, Shachi and Fin head there; Toto and Ron have returned to investigate too. Fin says that Kaji was likely stabbed after he was tied to the chair which means that the culprit was with him in the room. However, like in the Sun Prison Murder Case, a brass bar was mounted to the inside of the door, sealing the room from within.
Everyone then helps to thoroughly check the outside of the prison to find proof of whether someone entered or exited the building. In the end, Fin declares the case a perfect locked room right before Kiyotaka, Youko, and Sakanoue arrive.
Kiyotaka testifies that Kaji was fixated on finding Juntaro's killer because Juntaro had not left anything to his younger brother in his will. If Kaji could prove that Kiyotaka was his father's killer, he would get everything. Totomaru notes this must mean that Kaji went to the prison to investigate and then asks Youko for permission to smash the window. She agrees, and Kaji's corpse can finally be examined: He was not drugged, meaning that he was indeed killed inside the prison.
While Shachi, Fin, Toto, and Ron inspect the prison again, Sakanoue yells at them that it is their fault that Kaji died, as they had not arrested the culprit yesterday. Toto wholeheartedly apologizes to her; they only focused on solving the mystery, not apprehending the culprit, and now, another life was lost. His words open Fin's eyes to her own arrogance, and Fin allows Ron to help with the case—as long as he does not solve it because her father used to say that someone is only a detective if they solve the mystery; otherwise, they are only a bystander.
Later, Fin and the others question Youko, Kiyotaka, and Sakanoue. Toto inquires if they know where the brass bar might have been stored, and Kiyotaka reveals that it was kept in a shed at their home. As he, Youko, and Sakanoue all had access to the bar, they are all suspects; this sends Youko into a panic, but Sakanoue is there to tend to her.
Shachi and Fin then travel to the Mihane estate to search the shed for clues, whereas Ron and Totomaru stay behind. When Shachi and Fin return, Fin says that there were no clues in the shed and they have to start anew. However, Ron happily announces that he has solved the case.
After Amamiya rejoins them, everyone gathers to listen to Toto's recitation of Ron's deduction: The culprit inserted a neodymium magnet in the brass bar, attached the magnet to the door, and left the room. Thereafter, they used a blowtorch to heat the door and the bar until the bar was heated to 330 degrees—neodymium's Curie temperature, the point that has to be reached for the material to lose its magnetism. The bar then dropped into the brackets and locked the door. Because the magnet's magnetism was destroyed, Fin could not detect it with her Phoenix touch.
Because the culprit used a blowtorch they were not familiar with, they hurt their left hand—and Sakanoue has been suspiciously covering her left hand. Sakanoue killed Juntaro and Kaji to protect Youko. Ron deduced that when he saw how much Sakanoue cares for Youko's well-being; oddly, she does not care for Kiyotaka though.
Sakanoue confesses that she promised Youko's mother to protect her daughter. Youko's mother did not like Juntaro, knowing that he would bring trouble, and she was eventually proven right when Juntaro began squandering the Mihane fortune for his religious group. And then, Kaji tried to pin his brother's murder on Youko and Kiyotaka to get his hands on the fortune. Sakanoue had to kill them to protect Youko and the fortune, and although she has been caught, she is content, as she fulfilled her promise and will die soon anyway.
Later, Fin tells Totomaru that he solved the case well and reveals that she and Shachi actually took an x-ray of the bar and confirmed the magnet's presence inside it before Ron figured out the mystery. She and Shachi then leave, and although Ron wants to talk to them, he cannot as he faints due to his Kill on Sight medication.
A few days later, while Shachi and Fin are at the airport waiting for their flight home, Ron and Toto approach them. Ron tells Fin he solved the Sun Prison Murder Case. She remarks that it is a convincing solution; however, because he has no physical evidence, it cannot be accepted as an official solution.
Fin admits that she knows Ron wants something from her, and he tells her that he is gathering information on the Bloody Field Trip Case and asks why she is interested in that case as well. Fin says she is interested in it for two reasons: First because it is a locked room case. Second because of Aimee's unusual actions. Last year, Fin saw Aimee entering the Bloody Field Trip's crime scene—and Hirsch tailing her. Fin later confronted him about that, and Hirsch claimed he wanted to check if he left anything there. However, Hirsch had nothing to do with the Bloody Field Trip because he was not in England then. Fin stresses that this changes nothing though as the case is already settled before she and Shachi leave for their plane, a circumstance that excites Shachi.
===Coin and Carving Murders Case===
Shachi and Fin solve the mystery of an ancient pyramid's locked room.
===Tragic Cruise Serial Murders Case===
==Relationships==
===Fin Fennic===
Shachi is Fin's bodyguard. He started to work for her family while he was still a student at BLUE.
He is very devoted to Fin whom he calls "Madame" (お嬢, ojō, here: Young Lady)Shachi does not use the term with the honorific "-san" (お嬢さん, ojōsan). and dislikes it when someone is rude to her. Shachi frequently praises her and her skills, and while Fin seems to appreciate his assistance, she sometimes reprimands him due his excessive praising and lively nature.
==Etymology==
* His name "Shachi" means "orca" (シャチ).
==Trivia==
* Shachi likes Fin, punk rock, and candy, and dislikes Ron.
==References and notes==
Category:Characters
Category:Male characters
Category:Twin Prison Locked Room Murder Case characters
Category:Bloody Field Trip Case characters
Category:Tragic Cruise Serial Murders Case characters
Category:BLUE students
Category:M. Family
Category:England residents
Category:Deceased characters