Amamiya Kokoro is a Nijisanji virtual Youtuber.
Character design by Shiori, personal emoji is 🎐 (wind chime).
She is portrayed with long blue hair tied into twintails, and yellow eyes.
Her default outfit consists of a frilled white dress with detached frilled sleeves and a cut-out on her front that exposes her cleavage, a single thighhigh on her left leg, a red leg ribbon on her right leg, and hair jingle bells on her hair bows.
Her original concept art outfit consists of a long-sleeved white shirt with frills, a black skirt with suspenders, black beret, and either pantyhose or white thighhighs.
Lore-wise, she is portrayed as a miko who was raised away from society to learn to talk to certain dragons.