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Playful Hacker: Makoto, with an owl for extra cuteness.He ends up taking a level in jerkass in later episodes after meeting his big brother, and though he's back to the good side again by the end of the first cour, it's doubtful whether he'll ever again regain his former personality. Nice Guy: Hanasaki is usually very easygoing and friendly.Knockout Gas: Kobayashi uses this to knock out everyone in the building other than himself and Twenty Faces in Episode 12.Following his character arc in episodes 9-12, however, he completely loses this persona and goes into depression. Jerkass Realization: Hanasaki in episode 12, going so far as to result in an attempted suicide.Especially Twenty Faces' obsession toward Akechi. Heroic BSoD: Hanasaki, when his brother got shot by Nao.Heel–Face Revolving Door: Hanasaki in the latter third of the first cour, with hints that he may continue to be one in the future as well.For the second half, the roles are reversed: Azusa Tadokoro will sing the opening theme while Gackt will perform the ending. "Do It Yourself" Theme Tune: The opening theme is performed by GACKT, who plays the Fiend with Twenty Faces, while the ending theme is performed by Azusa Tadokoro, who plays Nao Nakamura.Death Seeker: Kobayashi is a seemingly immortal boy with a death wish.Chessmaster Sidekick: Inoue seems to be this to Akechi.The attempts have dwindled after he joined the Boys' Detective Agency, though. Kobayashi, on a regular basis, thanks to his immortality.Broken Pedestal: After Hanasaki finds out that Akechi lied to him about his brother's whereabouts.The episode is also more comedic/heart-warming in tone.
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Breather Episode: Episode 6 has no case or mystery to solve, and mainly focuses on the Character Development between Hanasaki and Kobayashi.Break Them by Talking: Episode 23 has Twenty Faces doing this to Akechi.Break the Badass: Twenty Faces does this to Akechi near the climax of the series.When it turns out his brother may not be such a good guy, he does not take it well. Big Brother Worship: Hanasaki absolutely worships his older brother.Thanks to his condition, he never shows an altruistic attitude and doesn't seem to care about the lives of others. Anti-Hero: Kobayashi is a combination of Classic Antihero and Nominal Hero.The show is airing as a part of the slate of Fall 2016 Anime and is licensed by Funimation. Meanwhile, Akechi chases after the criminal nicknamed the "Fiend with Twenty Faces". One day a club member named Kensuke Hanasaki meets Yoshio Kobayashi, a mysterious immortal boy who wishes to die, and invites him to the club while promising to find a way to kill him. Kogorou Akechi, a mysterious detective, and his Boy Detectives Club have solved a number of cases and incidents. Trickster: From Edogawa Ranpo's "The Boy Detectives Club" is an original anime directed by Masashiro Mukai and animated by TMS Entertainment, inspired famous Japanese mystery writer Ranpo Edogawa's novels The Boy Detectives Club and The Fiend With Twenty Faces.
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