Musubi is also known in Izumo Inn for being a glutton, eating large amounts of food and is apparently a capable cook, although she has only ever been seen cooking curry. With the others, she just competes to become closer with her Ashikabi. This rivalry consists mostly of shopping contests to decide who is allowed to sit next to him during meals, which Musubi has never lost once. Д«eyond that information, she also has a rivalry with Tsukiumi over who Minato's legal wife is. It has been seen in her battle with Karasuba to fight and live until they remain the last Sekirei on the battlefield, and Yume when kidnapped with No.87 Kaho, they swore to Yume that they'd find and be winged by the person they love, and become stronger than anyone else, and when one of them becomes the 'last one', the last one would release the Sekirei who had lost their wings back into the freedom of the skies. Musubi is very loyal and keeps her word to the point of trying to fulfill it. Another reference of it is when she and Tsukiumi protect both Minato and Kagari after the kiss. While Miya uses the Demonic Visage, Musubi uses the ' Bear Visage'. Partly thanks to the inner visage, she has earned the nickname bear (Kuma) given by Tsukiumi, by Benitsubasa (during the third stage after witnessing her visage) and by the fact of this visage being obviously a bear. The reason given is because she is Miya's disciple.

She develops a inner visage in the form of a ferocious bear that appears behind her whenever she is jealous or angry. Musubi is almost always smiling, even when she is upset or angry. She is very eager when it comes into confronting other Sekirei but never fails to be polite as she would usually ask for permission first before fighting them. She is very naive but insightful, often saying things she does not understand, and is probably the most 'childish' of Minato's Sekirei, even more so than Kusano. Musubi is very cheerful and carefree to the point of not having any concept of modesty, as she routinely appears either under dressed or with little or no attempt to cover her exposed breasts. She also wears a pair of red combat gloves that she only takes off for more social events.ДЄ running gag in the story is about how her clothing always ends up torn and tattered every time she fights, which usually results in a scary speech about manners and modesty from Asama Miya. Her normal attire is a white gi with red string decorating it that resemble the traditional clothing worn by the miko with the addition of a short red skirt, mid-calf brown boots, and upper thigh-high white stockings. Her most noticeable physical trait is her firm and well-endowed chest which is the second-largest of Minato's Sekirei behind Kazehana. Her hair is hime-styled it has short bangs, chin-length strands surrounds her head and framing her face, a single antenna-like strands that hangs just above her head, and hip-length hair at the nape of her neck. She sports a very developed and curvaceous body with a slim waist and flared hips. Musubi is a fair-skinned young woman of average height and slender built. Due to this, she and Minato became involved in a tournament organized by the MBI Corperation, called Sekirei Plan, which forces them to fight with other Sekirei in the capital in order to protect themselves and the ones they care about. This caused her Sekirei Crest to react to him.

She met Minato while literally falling out of the sky and was moved by his kindness.

Sekirei yume