Her official character bio states that she calls herself the Captain ("Senchou") of the Houshou Pirates, but she doesn't actually own a ship (hoping her career will raise funds for one)—meaning she is only a cosplayer.

Marine cites Shirakami Fubuki and Minato Aqua as inspirations for her decision to audition for Hololive.

Despite her official age being 17, she is often treated and joked about as a mature woman by viewers because of the dated topics she frequently talks about.

[8] She also actively discusses topics such as browsing adult-oriented doujinshi magazines and talks at length about searching for images of that manner in her streams.

[9] In December 2023, Houshou Marine performed at the annual FNS Music Festival by Fuji TV, becoming the first VTuber to be invited onto the show.