Houshou Marine is a pirate captain virtual YouTuber from Hololive Japan, known for her playful, theatrical streams and her signature Ahoy greeting that opens many of her broadcasts. The short greeting became a recognisable catchphrase among fans, who clipped it for stream highlights, fan edits and reaction videos across YouTube and social media. Because it is only one word long, it works as a quick, friendly intro that signals Marine's character instantly, which is why it continues to appear in Hololive fan content and anime-style soundboards years after her debut.