As a Ghoul, I'm Suzuya: A Bro Without Blood Ties to Eto

(Single female lead + gets stronger later + everyday life)

A man who has never watched Tokyo Ghoul wants a little sister so badly that he wakes up one morning in Tokyo, Japan.

Why can I have money but not a little sister?!

"Hello, my name is Yoshimura Eto. Here's my manuscript. Please read it."

Looking at a face that's nine-tenths identical to his former little sister's, you decide to treat her as your own sister.

*This fills you with determination.*

(Note: The author is still learning the story, so please bear with any rough writing.)