I Hope to Become the Tyrant’s Secret Sponsor

Plot:

I reincarnated as the older sister of the female lead in a 19+ dark angst novel.
And this novel had an even bigger problem: it was a kidnapping and confinement story.

‘…Who dares to imprison my little sister? No way I’ll allow that.’

I had to protect both my life and my precious sister’s life no matter what.

So, I secretly became the male lead’s sponsor.

‘Let’s shower him with money so he can’t even think about doing anything bad!’

And so, the “Male Lead Happiness Project” began.

But the male lead refused my sponsorship.

‘He says instead of this shallow charity, I should ask for direct payment?’

Well, if paying me back would ease his mind, that’s fine with me.

But this kid… he has nothing, so how does he plan to repay me?

“I’ll do anything to repay your kindness, Sponsor-nim.”
“…What can you even do?”
“Anything.”

His clear eyes looked directly at me on his innocent young face.

—That’s how it was back then.

But several years later, he returned as a full-grown adult and said:

“A contract must be fulfilled.”

With an obsessive gaze completely different from before.