Tokiko Tsumura (津村斗貴子, Tsumura Tokiko) is a 17 year-old alchemy warrior that was assigned to take care of a homunculus problem in Kazuki's town. When Kazuki tried to save her from a homunculus she felt a sense of attachment to him and revived him with a Kakugane, intending to make sure that he never gets killed again. Tokiko is very dedicated to her job, claiming that she hates all homunculi, and quit going to school in order to be more efficient. This hatred comes from the trauma she suffered as a little girl, when all the people in her school were killed or eaten by homunculi. The incident also left her with a horizontal scar running across the bridge of her nose and across her cheeks. As such, she is serious almost all the time, which leads to some awkward situations between her, Kazuki, and his friends. Though her scar could have been easily removed by the power of alchemy, Tokiko had decided to keep it as a reminder of her desire to kill all homunculi. She is later assigned to be a student at Kazuki's school by Captain Bravo. She eventually falls in love with Kazuki and stays with him at the end of the series. Her famous catchphrase when battling is "I'll splatter your guts!" True to her words, the Valkyrie Skirt has torn many enemies apart. At the end of the series, she is forced to give up her Kakugane when the Alchemist Warriors suspended operations, but Kazuki assures her that the one he uses as his heart will be enough for the both of them.
Her Buso Renkin is Kakugane XLIV, Valkyrie Skirt (ヴァルキリー・スカート, Varukirī Sukāto). This takes the form of four scythe-like blades that attach to her legs. She is capable of using them a number of ways, from attacking numerous enemies at once to using them to boost her jumps and cushion her landings. She has also used them to traverse difficult terrain and even skate across walls. The name comes from how in stand-by mode the blades fold up, and in her school outfit, her skirt resembles that of a Valkyrie. Unfortunately, the weapon is ill-equipped to fight enemies of great physical power or endurance. To make up for these deficiencies, Tokiko uses strategy and agility.
As a note in her character profile, Watsuki states she was a feminized version of Kenshin Himura's design as the Hitokiri Battousai. Voiced by: Ryōka Yuzuki (Japanese), Tara Platt (English)