She had the same rare disease as the fragile main character and died three times of it in a BL novel.
She doesn't want to die in vain like that again.
Therefore, she has taken an extraordinary measure!

'Let's try to benefit from someone's remedy rack!'

I won't waste even one drop of your medicine or breath, Young Master!
She disguised herself as an attendant and set on her journey to find the medicine.
I can't believe that even the spiritual force emanating from his breath has the ability to cure me! It can't get any better than this!
However, tending to such a person isn’t an easy task….

"Leave! I said leave!! I'm sick of all of you!!! ...Wait. Why are you on your knees?"
"Young Master, if you just planning on throwing it away, please throw it into my mouth."

The hand that was about to throw the medicine bottle faltered as he was flustered. And so, I said to him...

"I also don't mind if you just dump it onto my face..."

I saw his pupil widen at that very instant.

====

I am a girl who does what has to be done.
I took great care of my savior, the Young Master, while I was at it.
As his attendant, I hugged him, piggybacked him, and became his legs as I helped him move from one place to another.

Perhaps he was trying to see my worth as he was the heir to a distinguished dukedom?
He looked at me tiredly from time to time, but he didn't kick me out.

Well, now that I'm cured and have repaid his kindness.
I started to slowly make my plan to escape, but...
...The Young Master's behavior became weird.

"You like me so much, yet why are you trying to run away?"
"...."
"You said that you'd die without me."

His expression suddenly shifted to that of a hungry predator.

[A female lead who became obsessed without realizing it X A male lead who learned from the female lead and became the real obsessive one]