Usually silent and seldom shows any facial expression, she talks only when necessary. On Eri's investigation, Karen's past history is unknown.   Karen has a butterfly insignia on her left breast. The insignia on magnification is made up of minute numbers which decodes to the sentence "the gate of the truth will be opened by the sleeping butterfly" and a map coordinate, which is where the group is heading to.   (Source: Wikipedia) 

Aika is a smart and athletic high school girl. She is so competent that she successfully passes the salvagers license test, obtaining a C-class license. Yet, she is young and hotheaded, so much so that Gota still treats her as a child. Due to this personality, no one is willing to hire her for salvaging jobs. 
Since she had taken the trouble to get her license, she decides to post an ad in her school to attract clients. She manages to get the attention of Erika, a daughter of a rich family and the leader of the treasure hunting club. She asks Aika to salvage something from the sea and Aika delightfully accepts the request. 
However, upon seeing the state-of-the-art submarine loaded onto Erika's private cruiser and discovering their destination, Aika realizes the terrible nature of her assignment. This results in a clash with a group of high school girls in the southern islands. 
Who is the mysterious girl named Karen? So begins Aika's newest challenge! 
(Source: AnimeNfo)

[Profile](https://osawa-inc.co.jp/women/notomamiko/)

A Japanese actress, voice actress, and singer. She is married and has one kid.

**Non-anime roles:**
- Shinano - Azur Lane (VG)
- Emma - Goddess of Victory: Nikke (VG)
- Skirk - Genshin Impact (VG)
- Durandal - Honkai Impact 3rd (VG)
- Jun Kazama - Tekken series (VG)
- Mother - Avataro Sentai Donbrothers (Super Sentai) 
- Rella Melancoryphus Cygnus - Metaphor: ReFantazio (VG)
- Yi Xuan - Zenless Zone Zero (VG)

Erika Lenhart is an American voice actress. She is best known for the voice of Seong Mina in Soul Calibur III & IV.

Aika's story continues, she is now 19 years-old, 3 years older than in R-16 and 7 younger than in Agent AIKa. Strange phenomena have been occuring at a girls academy. Slowly but persistently the most cute and beautiful girls are joining an internal club, but instead of a sing-in they just get abducted by a strange being that takes control over them by some indecent means. 
By coincidence Aika was flying-by on her plane when one of this abductions occurred and she was attacked to prevent her from comming closer, but instead of repelling her, she is intrigued about the attack's origin and then the opportunity shows up when her late partners from R-16 decide to investigate those abductions. The story remains full of action and panty flashing that are a must in Aika's series.
 
(Source: Anime News Network)

Karen Minamino