Onna Senshi Theodora ~Chijoku no Tougijou~

Theodora, your son is in critical condition. The doctor tell her the cruel truth, an extremely rare disease is eating away at his body.

In front of her is the pitiful sight of her only son, Granz. Theodora, the highly respected female warrior who once saved the world, is unable to save her son.

Not all hope is lost, there is a medicine that will cure your son's illness, but the cost to prepare the ingredients is enormous. If you can get the money, then he'll be saved.

And then, Theodora was led into the arena. Thus begins a degrading fight filled with shame, malice, and lust. She does it all for the sake of her son...

[From official site]