Yuzuriha Sougetsu (Blade of Godspeed), is a playable character and one of the supporting protagonists, whose family was one of the known associates of Night Blade until their defections, in Under Night In-Birth and its updates.
She returns in BlazBlue Cross Tag Battle as one of the Season 1’s DLC playable characters.
Sougetsu clan was once served Night Blade, a long gone organization that was dedicated to the protection of the innocent during the Hollow Night until infighting brought them to ruin. Her family had long abandoned their duties as members of the Night Blade, but not Yuzuriha: with her family's ancestral weapon, she has taken it upon herself carry on the Night Blade's worthy cause, protecting people from Voids, if for no other reason than because it is so much fun.
She use to be a childhood friend of Hyde Kido, and often training together in a kendo training sessions. Until at some point, an “accident” occurs, causing Hyde unable to overcome his tragedy from unable to protect Yuzuriha, and separated from her ever since. However, they are still a good friend and always keep in touch each other as of the present.
Yuzuriha was also the last person to see the Bankikai active, prior the next night’s incident during the organization’s turf battle against Amnesia, where the former organization defuncted due to the death of its leader, Ogre, and Amnesia member Roger, a friend of Gordeau the Harvester who was turned into a Void. It also makes her one of the two known In-Births (other being Carmine Prime) to have last seen the two known casualties of the next night alive prior their deaths respectively.
Yuzuriha's EXS ability, the EXS of Falling Flowers: Ainsel Lost, grants her incredible speed, allowing her to Flash Step. With this speed in conjunction with her ancestral sword, the Iris Blade (nicknamed Ayame), she is a fierce swordswoman whose quick-draw techniques let her cut through her enemies before they can react.
- She shares a Japanese voice actress as Nine the Phantom
- Yuzuriha has color palettes of the following characters: Johnny Sfondi (Guilty Gear), Tsubaki Yayoi (Izayoi) (BlazBlue), Margaret (Persona 3 Portable/4), Gordeau the Harvester, Lie Ren (RWBY), and Shadow the Hedgehog (Sonic the Hedgehog).