Nina Kosaka

Nina Kosaka is a female English Virtual Youtuber affiilated with Nijisanji EN's third wave "Ethyria," alongside Millie Parfait, Enna Alouette, and Reimu Endou.

History
On 18 June 2021, Nijisanji EN opened two sets of auditions, one of which was for an all-female wave of four. Sillouettes of the new Livers' designs were shown, one of which was designated "Fox of Heaven." The all-female auditions lasted until 11 July. Youtube channels for Nijisanji EN's third wave were created on 14 September 2021, and their Twitter accounts were also created in September 2021.

On 5 Oct 2021, Nijisanji EN announced the upcoming debut of its third group, "Ethyria."