Psionic metamutant Tatsu Braddock (an Amalgam of Psylocke and Katana) left her home in England to travel the world and eventually became the sword-wielding mercenary known as Kokoro. Combining her mutant powers with ninja training, Kokoro’s katana is double deadly because it strikes both a physical and mental blow.
Kokoro befriended an other-dimensional entity Haloroma after helping to free alien spirit from its imprisonment within a human host.