Subjective, assumption-filled blurb:
My name is Tsurumi Sei, a sister-obsessed shut-in who got kicked out of my family’s organization by my older brother because I wanted to live a rock-and-roll life.
Before I left, my brother gave me two choices.
One: find a good-looking partner with a great figure.
Two: make something of myself.
If I manage either one, I can go home and return to my decadent shut-in otaku lifestyle.
However,
On the very first day of my revenge-fueled attempt to live a normal, fulfilled life, I ran into someone and gave him amnesia.
Tsurumi Sei, whose allowance had been cut off, leaving her penniless: ...
Gazing at the handsome, black-haired man with a great figure, unconscious in the hospital bed, I had a sudden thought:
If this guy were my boyfriend, wouldn’t I get out of paying compensation?!
And so,
Tsurumi Sei (straining to squeeze out some tears): You’re my boyfriend.
The concussed Shuichi Akai and the others: ???
(No.)
Here is the actual blurb:
As the head of the Karasuma family grows old, his declining health gradually drives him mad. He begins pursuing all kinds of “miracles” to help prolong his life. By a twist of fate, Tsurumi Sei, the least favored and most insignificant member of this vast family, is sent to the old estate.
There, she meets the white-haired, red-eyed woman whom the head of the Karasuma family brought back from Fuyuki City, and who is about to marry him.
*The female lead has very little sense of morality. She’s a lazy, crazy calico cat.
*Don’t have any illusions about the female lead. She only wants to fight.
*Low on magic content (?)
Premise: Overcome yourself