The Benten is a modified Independence-class Littoral Combat Ship (LCS) in service with the Blue Mermaids, under the command of Mafuyu Munetani, one of Mashiro's older sisters.
Like the mainstay of the Blue Mermaids navy, the Benten features a trimaran hull designed for speed, maneuverability, and stability. It is equipped with the same weapon systems as its sister ships.
However, the ship is well-known for its unique black paint scheme, which is different from the other ships that was seen in white and red, possibly designed for night operations and act as a camoflouge.
When the Harekaze requested for Blue Mermaids support in handling an infected Hiei, the Benten was the first to respond in the battle's aftermath. For a while, its commander Mafuyu and the Harekaze's Mashiro somewhat enjoyed a brief reunion. After discussing her next move with Akeno and Mashiro, Mafuyu left to investigate a large contact close to Chuuk Lagoon.
During Operation: Perseus, Mafuyu's fleet was positioned east of the Philippines, expecting the Musashi to come their way. But after learning that it reversed course and threatened the Japanese mainland, the Benten raced to the scene, even though it wouldn't make it on time.
- The ship may be named after Benzaiten (also called Benten), referring to the Hindu goddess Saraswati. In Japanese Buddhism, Benzaiten is the goddess of everything that flows such as water. The shrines that worship her are called Benten-do or Benten-sha.