Nina Kosaka is an English VTuber affiliated with Nijisanji EN's third wave "Ethyria," known for her nurturing personality and dark sense of humor. Considered the "mom" of Nijisanji EN, Nina is known for her doting and supportive behavior towards her fellow Livers, often referring to them as her children. Her streams create a comfy and healing atmosphere, earning her a reputation among viewers. Nina also presents herself as a "boomer" at times, showcasing her lack of internet savvy. Despite her nurturing nature, she also possesses a cunning and borderline sadistic side, which manifests through her dark sense of humor and sarcastic remarks. Nina made her debut as part of Ethyria on October 9, 2021, and has since gained a dedicated fanbase.
