Etorofu was one of fourteen Etorofu-class coastal defense ships built for the Imperial Japanese Navy during World War II.
She participated in the escort effort of Hi-82 convoy in 1944. The convoy suffered the loss of 3 tankers to US submarines. She survived the War and was used for repatriation until 1947 when she was handed to the US and scrapped.
Etorofu has large violet eyes and red hair done up in braids. She wears a white sailor cap with a blue tally, a white sailor suit made up of a blouse/coat with long sleeves, a blue collar with a light blue tie and a blue pleated skirt. She wears black tights underneath her skirt as well as quarter-length socks. An anchor is seen chained to her left calf.
- Etorofu has a forthright and enthusiastic personality, always willing to help anyone in need.
- She takes the role of a coastal defense ship seriously, and this determined nature tends to extend to other situations in the naval base, almost making her resemble a chipper version of Asashio.
- Aside from her hardworking personality, she seems to lack other traits, essentially making her a pocket Fubuki in many aspects.