Nina Kosaka was a female extrovert Virtual YouTuber who was affiliated with NIJISANJI EN third wave “Ethyria.” On July 8, 2023, she graduated and posted her last live stream on YouTube. The stream has been watched by over 866k views. She has more than 545k subscribers on her YouTube channel.
Debut
On October 9, 2021, she posted her very first live stream on YouTube titled, “my first (surprise!) stream ✰.” Nina was the first of the “Ethyria” group to debut as a part of NIJISANJI EN third group VTubers.
Personality
Kosaka is an extrovert, supportive, and was a group mom. She is also cunning and a very supportive person, with an occasional dark sense of humor.
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Nina Kosaka Wiki/Biography
| Real Name | Nina Kosaka (狐坂ニナ) |
| Nickname | Keeper of Luck Mom Nani Kusa Fox Mom |
| Date of Birth | November 22 |
| Age (As of 2025) | Mid-30s |
| Birthplace | France |
| Zodiac Sign | Sagittarius |
| Debut Date | October 9, 2021 |
| Retirement Date | July 8, 2023 |
| Collaborations | Enna Alouette, Reimu Endou, and Millie Parfait |
| Affiliation | NIJISANJI |
| Net Worth (As of 2025) | $50k |
Virtual Character Information
| Lore | Nine tailed fox mom that wishes joy to all the souls on the long journey |
| Fictional Character Name | Fox Mom |
| Virtual Character Designer | Illustration: so-bin |
Personal Details
| Height | 5 ft 8.6 in (174 cm) |
| Weight | 68 kg (150 lbs) |
| Body Measurements | 34-38-36 |
| Eye Color | Red eyes with small, “+” shaped pupils and fox ears |
| Hair Color | Nine red fox tails |
Early Life & Education
Nina Kosaka was born on November 22, in France. She was raised in a middle class French family. She completed her early and higher education from the prestigious institutes.
Career Achievements
Immediately after starting out as a part of Ethyria, she started getting publicity. On YouTube, she introduced herself as a beautiful, passionate, dedicated, and smart woman. On November 15, 2021, she amassed over 100k subscribers on her YouTube channel.
As a Virtual YouTuber, she primarily streamed just chatting, ASMR, and music streams. Her most watched video on YouTube is her groundbreaking hit song that goes by GOD SEES ALL ver. Nina Kosaka feat Ike Eveland. It has almost 1.5 million views.
Since her retirement, many speculations have been made about why she retired and where she is now. I guess we will never know because she has left her VTuber career to pursue her real life career goals.
Career Details
| Most Viewed Video | Her most viewed video on YouTube is titled, “Full 0 to 5500 in Competitive | 1 Play Session to Max Legend Rank!.” It has over 2.5 million views |
| Twitch Stats | She isn’t available on Twitch |
| YouTube Stats | She hasn’t posted any video since her graduation |
| Career Position | Level 100 (Elitist at the time of her graduation) |
Age, Height & Weight
Nina Kosaka was born on November 22. As of 2025, she is in her mid-30s. She has a height of around 5 feet 8.6 inches (174 cm) and has a weight of around 68 kg (150 lbs). Regarding her physique, she has body measurements of around 34-38-36.
Personal Life & Husband
During one of her stream sessions, she revealed that she is happily married. Some fans speculate that she was just joking, while other sources says that, she is actually married. There is no information regarding whether she has kids.
Net Worth
Nina Kosaka is a retired and graduated former streamer whose primary income of source came from her association with NIJISANJI. Currently, she is pursuing her professional career. She boasts a net worth of around $50k.
Some Unknown Facts About Nina Kosaka
- She is a French-Japanese nationality holder of French descent.
- Professionally, she has retired from her VTubing career.
- Her most watched video on YouTube has received over 1.4 million views.
- She enjoys cooking, dining and baking.
- Nina is fluent in English, Russian, and French.
- She has done exclusive French language streams.
- Her fanbase is known as “Honeys” or “Honeybunnies”.
- As of now, she lives and works in Japan.
Nina Kosaka Social Media Accounts & Followers
| Social Media | Followers |
| YouTube | (@NinaKosaka): 545k subscribers |
| (@kosakanina): 12.7k followers |
Hashtags
- #NinaKosaka – General
- #KosaCast – Stream talk
- #DrawKosaka – Fan art
- #KosaKusa – Memes
- #KosaClips – Clips
- #NinaKosakaFR – FR
