Mitsuri Kanroji is a major supporting character of Demon Slayer: Kimetsu no Yaiba. She is a Demon Slayer of the Demon Slayer Corps and the current Love Hashira.
As a Hashira of the Demon Slayer Corps, Mitsuri is one of the most powerful and skilled swordswoman in the entire organization. Mitsuri makes use of a special swordsmanship style based around her thin and flexible nichirin sword akin to a whip sword. Her swordsmanship skill allowed her to quickly subdue the creatures spawned by Upper Rank Five, Gyokko, slicing the demons up at speeds faster than they can react with great accuracy. Mitsuri best displayed her unique swordsmanship style and sword wielding skill during her battle with Zohakuten. Her swordsmanship was so precise that Mitsuri could cut through lightning and sound waves produced by the Upper Rank, and managed to counter and destroy all of his techniques.
Love Breathing: A Breathing Style Mitsuri created herself based on her experience using Flame Breathing, from being the Tsuguko of Kyojuro Rengoku. Love Breathing incorporates elements of Mitsuri's superhuman flexibility and her unique whip-like Nichirin Sword. Using this Breathing Style, she can unleash attacks that cover a wide range of motion as well as long ranges that a normal katana would be unable to accomplish.
Flame Breathing: A Breathing Style that Mitsuri learnt when training under the Flame Hashira, Kyojuro Rengoku. However, although Mitsuri has learnt it, she was not as skillful with it and cannot fight to her fullest using it. Thus, she developed Love Breathing, a Breathing Style more suited to her and can properly make use of her strengths.
Whip Nichirin Katana: Unlike most Demon Slayers who use standard katanas, Mitsuri wields an extremely thin, flexible, and long katana akin to a whip. It was implied to made by Tecchin Tecchikawahara, possibly due to its bizarre shape which requires immense expertise to craft. Due to her sword's structure, only Mitsuri can use it without cutting herself in the process, which can be attributed to her superhuman flexibility. Using this katana, Mitsuri can use techniques faster than that of the Sound Hashira, Tengen Uzui, which can keep up with the attacks of Zohakuten. Her whip katana is pink in color and her hilt is shaped like a 4 leaf clover; the leaves have a pink core with a golden border, with the words Destroyer of Demons engraved on the side. Along with her special katana, Mitsuri carries around a standard sized and shaped sword sheath. Due to her sword's unique shape, Mitsuri folds her katana multiple times to properly sheathe it.