Tsukasa Akira (real name Sarah Anderson) was nine years old when poverty and homelessness took the lives of her parents and almost took hers. With the few days granted to her from her parents' priority of her wellbeing, Tsukasa took up stealing to survive, and eventually murdered her late father's previous boss, blaming him for her family's poverty. After a few years, Tsukasa began a life as a professional thief, but during a particularly risky heist, was forced to use the bounty, a collection of nanomachines that entered her body, to survive. Since then, Tsukasa has performed both thief and assassin jobs, taking advantage of her enhanced strength and resistance, as well as the ability to shape a weapon with extra nanomachines. Her most notable variation is a greatsword, light enough to wield even without her enhanced strength. Also, her world is connected to another world where magic is possible; when she enters this area, she is capable of only a few extra abilities, mainly physical reinforcement. However, she is also able to cast a small healing spell.

Tsukasa's base is SH Figuarts Nami. All non skin is sculpted with Fixit, even the hair. All was painted with Testors, aside from most skin (some was touched up, as well as freckles were painted). Cape is fabric, with silver paint for the emblem. The spikes are sculpted and superglued on. Armor battle damage combination of sculpted damage and dremeling.