The leader of Genius 4 (known as G4 for short), a police investigation unit. She is a genius, bossy girl who looks down on Milky Holmes since they lost their toys, and is particularly annoyed by Sherlock (by calling her Koko-chan), often whacking her with a gold mask. She always says that she graduated in Harvard in the age 13 and that she has an IQ of 1300.  Her name is based on Edogawa Rampo's Kogoro Akechi.   (Source: Wikipedia) 

"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)

__Height:__ 150 cm

[Fanclub](https://www.gokinjolno.jp/) | [Blog](http://nanjolno.jugem.jp/) | [Twitter](https://twitter.com/nanjolno) | [Instagram](https://www.instagram.com/nanjolno/) | [Youtube](https://www.youtube.com/channel/UCFJORT2GGeNsKKLCf3BqSEQ)

She was the vocalist of the band fripSide and graduated in April 2022 with the fripSide Phase 2 Final Arena Tour. Likes cats, Final Fantasy XIV (even dubbed and sung the battle theme of Suzaku), and ramen.

**Non anime roles:**
- Soltina - Memento Mori (VG)
- Noise - Goddess of Victory: Nikke (VG)
- Topaz - Honkai: Star Rail (VG)
- Shu - Arknights (VG)
- Junah - Metaphor: ReFantazio (VG)
- Trigger - Zenless Zone Zero (VG)

Second season of Tantei Opera Milky Holmes.

The film will feature a three-way battle between The Gentlemen Thief Empire, the Genius 4, and the Milky Holmes groups. Just as the Milky Holmes group is settling down to relax at a hot spring after their study tour, an alarm goes off, because The Gentlemen Thief Empire intend to steal a treasure. The two groups start to battle for who gets to use the "Toys," when suddenly the Genius 4 rush to the scene.
 
(Source: Anime News Network)

In the story, the Great Era of Detectives — when detectives and thieves with a power known as "Toys" compete — has given way to the Great Era of Idols. However, someone starts stealing the idols' songs in Yokohama. When super idol Marine Amagi's hit song "Kiseki no Uta" (Miracle's Song) is stolen, she enlists the detectives of Milky Holmes. 
 
(Source: Anime News Network)

Third season of Tantei Opera Milky Holmes.

The Phantom Thief Arsène is undeniably powerful. If she wishes for it, she could steal any treasure she wants without being caught or arrested. However, she pulls her punches because she desires that Milky Holmes achieve their full potential as detectives—and then to battle them without holding anything back. To achieve this, she tries every trick up her sleeve to create various situations for them to face each other—avoiding any hindrances that may come her way!


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

In the story of the special, the members of Milky Holmes will investigate to return a stolen card that contains Aichi Sendou's memories.
 
(Source: Anime News Network)

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)

Kokoro Akechi