The Male Lead Mistakes Me For Someone With A Terminal Illness

Summary

I got reincarnated into a bleak fantasy novel with no dreams or hopes.
Into the body of a terminally ill child who wouldn’t even live past twenty.
On top of that, I was kidnapped by the worst villains in the world and raised to become the mastermind dark wizard.
“Witch Frezeta, atone through death.”
In the end, I was destined to die at the protagonist’s hands…
…But then, I somehow returned to the past?

Thanks to returning while still a great wizard, I’ve already escaped the terminal illness… but…
“Cough, cough!”
During recovery, I often cough up blood and collapse.
Because of that, people start having strange misunderstandings.
“Irina, if you can get better, I’ll do anything.”
My doting father who only looks at me.
“Hmph, you’re weak, so I’ll protect you.”
My brother who doesn’t even realize he’s weaker than me but keeps saying he’ll protect me.
“To save you, I’ll even destroy the temple.”
Um, you were originally a holy knight chosen by the gods…
But the male lead even forgets his duty and threatens to smash the temple.

This is a big problem.
People are mistaking me for someone with a terminal illness.