How to Protect the Heroine’s Older Brother

I somehow ended up possessing a 19+ reverse harem novel.

The problem is that I became the older sister of a villainous supporting male lead...

And my awful father actually kidnapped the heroine’s older brother.

So now we’re only waiting to be destroyed by revenge from the heroine’s family.

Ah, escaping death flags is really hard.

'I’m also interested in this toy.'

Brother, from this point on, I’ll protect you.

So remember to repay this favor someday, okay?

<How to Protect the Heroine’s Brother>