mararu, mobius (daughter of corals) (honkai impact), mobius (honkai impact), honkai (series), honkai impact 3rd, commentary, english commentary, highres, 1girl, air bubble, armpits, blue horns, breasts, bubble, clothing cutout, fake horns, horns, jellyfish, long hair, medium breasts, mermaid costume, official alternate costume, parted lips, side cutout, slit pupils, solo, underwater, very long hair