1girl a-ka baseball cap beach bikini breasts cleavage commentary request earrings eyewear on head hat heterochromia highres holding holding water gun hololive houshou marine houshou marine (summer) jacket jewelry large breasts long hair looking at viewer navel necklace off shoulder official alternate costume open clothes open jacket open mouth outdoors partially submerged red bikini red eyes red hair shorts sitting solo sunglasses swimsuit virtual youtuber water water gun wet yellow eyes