Rixia is trying to integrate everything into her current self, so she doesn't want to hide things from people she cares about Her father did not see a doctor or consider medical treatment. So many of the characters have some sort of darkness in their past that it isn't that big of a deal to most of them.
rixia mao (eiyuu densetsu and 2 more) drawn by sae_but_bu | Danbooru
Her true identity is silver, the legendary killer of the republic of kalvard, who uses a huge magic sword that is longer than her height as a weapon.
Rixia was first introduced in zero no kiseki as a talented newcomer for the arc en ciel theater group
In the other side, rixia is feared by those who live in the easterner settlements, as she is “yin”, the legendary assassin. Originally from the calvard republic, rixia finds herself entangled in the political turmoil of crossbell Though initially mysterious, her true identity is that of a highly trained assassin working for the criminal syndicate known as the red constellation. In s.1201, rixia inherited the role of acting yin when her father contracted an incurable disease
Although he was perceived as the strongest yin history had known, the disease was too serious for him to overcome
