At the end of Touhou: DDC in Sakuya A's arc, she's offered by Raiko to have her dagger turned into a tsukumogami, but refuses on the grounds that "It would become too powerful". So here he is (I know they're all supposed to be girls but I wanted to include him with the touhou boy's club)

Name: Kensuoh Kurohana
Species: tsukumogami
Location: Shining Needle Castle
Power: Controlling his "dancing blades", immunity to time/space manipulation
Relations: Sakuya Izayoi (former mistress)