Minamitsu has short, black hair and a teal eyecolor. Her clothes are designed after a regular sailor's outfit, with a white shirt and skirt with blue lines. Around her neck she has a neckerchief. In some of her spell cards she is seen with a green aura, most likely her ghost form. ZUN stated in an interview that the design for Minamitsu was the hardest to finish. He had much more sketches of Minamitsu with different hairstyles and haircolor in comparison to the other characters from Undefined Fantastic Object. He also couldn't decide whether a long or short skirt was better for Minamitsu.
While Minamitsu is a rather fearsome phantom, she is still kind-hearted with a bright personality. Mainly due to her ties with the Myouren Temple she could empathize with humans and her victims, and thus chooses them more carefully. She also chats with the victims she capsizes.
- Byakuren Hijiri (Savior)
- Shou Toramaru (Member of her group of youkai)
- Ichirin Kumoi (Member of her group of youkai)
- Nazrin (Member of her group of youkai)
- Nue Houjuu (Unknown)
After her death, Minamitsu became a spirit, bound to the ocean due to her lingering attachment to the world. Because of her spite, she eventually became renowned far and wide for capsizing ships. Many feared her, and tried to think of ways to somehow restrict her actions, but it wasn't until the monk Byakuren Hijiri was asked to do something about it that the situation changed. Minamitsu, knowing how famous the monk was at the time, believed she would be able to extend her influence even farther by sinking her, as well, and perhaps even escape her connection to the ocean and attack humans on land.
However, when Byakuren did appear before her on the seas completely defenseless, Minamitsu sunk her ship easily, prompting the spirit to wonder why. Byakuren then reappeared on the surface atop a shining ship, which she had constructed using the ship Minamitsu had died on as a design. Moved by the monk's insight and her own sense of nostalgia, she accepted Byakuren's offer to captain the shining ship.
Eventually, after Byakuren was sealed away, Minamitsu was "buried" into the ground along with her ship. Having been long forgotten, Minamitsu and the rest of the youkai were pushed above ground in Gensokyo by a geyser - likely due to the events in Subterranean Animism - along with the palanquin ship and the fragments of the floating vault.
In Undefined Fantastic Object, Minamitsu meets the heroine as she is making preparations for the ship to go to Hokkai, via Makai, where Hijiri is being sealed. Along with Nazrin, Ichirin, and Shou, she is one of the youkai trying to unseal her. Unlike Ichirin, she learns that the heroine doesn't have any particular motive to help the group, and attacks in order to take the fragments of the treasure back. Though she loses out in the end, she had already placed the ship in auto-pilot, so it was too late for the heroine to escape.
Minamitsu possesses the ability to cause shipwrecks. Her ability appears to be odd compared to a regular ghost, which is because she drowned at sea a long time ago. Due to a certain attachment to the ocean she kept capsizing passing ships. Besides capsizing ships she could also drown anyone near water, which goes as far as drowning someone who bathe in hot spring water, or sat peacefully near a river's edge. This is also why she is seen around places with a lot of water.
- Minamitsu's first name (水蜜) means 'Water Honey'. Murasa (村紗) is a name of Funayuurei, which can be found in folklore of Shimane Prefecture. Funayuurei are the vengeful spirits of people who have died in sea.
- Her stage theme has a distinctive Windows XP balloon hint "pop" around 2:10, which probably got in the recording, as stated in ZUN's Twitter.
- Like Aya Shameimaru in Mountain of Faith, Minamitsu Murasa doesn't seem to have a gimmick/variation based on the playable character (which is something usual in stage 4 bosses).
- In addition to that, like Aya, she has a survival spell card (and she doesn't have it on Easy mode).
- Her name is similar to that of Minamoto no Yorimasa (The archer who supposedly sealed Nue Houjuu).
- In some fanfics, she is fond of Japanese curry, because curry is said to have been eaten first and introduced into Japan by members of the Imperial Japanese Navy. Even the present-day Maritime Self-Defense Force has it for lunch every Friday in order to remember the day of the week even if they are at sea. (The Japanese Wikipedia even has a page about it: "海軍カレー".)
- She has been shown wielding her anchor as a weapon, and this has been the source of parody images comparing Murasa to May from the Guilty Gear series.
- Strangely, "Murasa" is written in kanji in UFO's manual, but is written with katakana when she appears in the game itself. This is not the case with Double Spoiler, though, where her name is flashed in kanji.
- Minamitsu is one of the three characters that owns a boat, along with Komachi and Futo, although her boat is more like a ship.