I Was Reincarnated As The Older Brother Of A Villainess Destined to Die, So I Want To Change The Future By Raising My Younger Sister With My Own Hands ~I Am The Strongest In The World, But My Little Sister Must Be The Cutest In The World~ Chapter v15 part4 Discussion

You can skim most of the story and still get the gist of it. It's your generic power fantasy where MC uses his previous life's knowledge to prevent his sister's downfall. As far as where I am right now, this story's main problem is its political intrigue and the realism of the story. If your suspension of disbelief is long or just new to reading japanese power fantasy, then this story is good for you.