koku (koku 013), saegusa akina, saegusa akina (2nd costume), nijisanji, highres, 1boy, :d, ahoge, arm up, balloon, belt, black hair, black pants, black shirt, brown belt, confetti, diamond balloon, earrings, fur-trimmed jacket, fur trim, hair between eyes, holding, holding microphone, jacket, jewelry, looking at viewer, male focus, microphone, multicolored hair, open clothes, open jacket, open mouth, pants, red hair, red jacket, shirt, short hair, sitting, smile, solo, streaked hair, striped clothes, teeth, vertical-striped clothes, virtual youtuber