Nia Pomera is a first-year student residing in the Black Doggy House dormitory at Dahlia Academy Boarding School. She belongs to the Black Dog faction, which represents the Touwa Nation. Her name originates from the Pomeranian dog breed, a choice reflecting the canine-themed naming tradition of the Black Doggy House. Episodic content features Nia, including scenes shared with fellow Black Dog student Shizuka Shishi in Episode 2, and additional scenes involving both Hasuki Komai and Shizuka Shishi in Episode 4.