V na Imouto no Love Song

Yamato, a freelance musician since high school, moves in with his reclusive step-sister Rinne after his parents remarry. He discovers she is a V-tuber and decides to compose a theme song for her. As he watches her videos, he hears her say, "Kon-Mikua ♥ 'Ryugu Mikua' here, ya! I'm still learning how to be a good girl, so please keep on supporting me ♥." The story explores the contrast between Rinne's online persona and her private self in a comedic setting.