Mori Arty is a cute girl dressed in black that declares being a fan of Milky Holmes. She often utters advices or requests in the moest way possible to the group of detectives, which in turn always bring a fair amount of mayhem. The motives of this character are yet unknown.

"Sheryl, Nero, Elly, and Cordelia are the most popular students at Holmes Detective Academy, because of the many cases they've solved with their Toys and teamwork. The students and the people of the Detective City Yokohama all look up to the members of "Milky Holmes", as they're called. But on a dark and stormy night, during a battle with their rivals "The Gentlemen Thief Empire", they lose their toys, and their fate undergoes a dramatic change..." 
(Source: Crunchyroll)

__Agency:__ I'm Enterprise

[Profile](https://www.imenterprise.jp/profile.php?id=55)

Has a younger sister.

Second season of Tantei Opera Milky Holmes.

Brand-new animation announced at "Live Milky Holmes Full Colour Festival."

A special program of Tantei Opera Milky Holmes produced by the staff of the TV series. 
After some pushing by Irene and her father and a lack of support otherwise, Kokoro stubbornly quits her job as a police detective to become an idol. She soon finds the idol life draining and starts to miss her old detective life. When Henriette notices Sherlock's loneliness without her, she stages a statue theft in order to convince Kokoro to return to the force. 
(Source: AniDB)