What is the greatest power in the world? The power of a little sister.
Who is the strongest person in the world? A sister-complex.
What is the most terrifying thing in the world? Hurting a sister-complex's little sister.
What is the most formidable thing in the world? A sister-complex fighting for his little sister's happiness.
This is a demon who would destroy everything for his little sister. This is a gentleman who thinks that as long as he has his little sister, everything else is meaningless. Yes, the important thing is that he's a gentleman.
This is a sister-complex, a sister-complex who has wandered into another world.
Long live sister-complexes!
This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.
