Light Novel: My Bodyguard Is a Cold-Blooded Katana-Wielding Girl

No System + One Female Lead + Urban Otherworld + Everyday Life

Monsters and demi-humans born in another world squeezed through cracks into the human world. Humanity's survival was threatened, and civilization was devastated.

The girl whose parents were killed by monsters, Sakuramiya Ritsuki, made a contract with a spirit beast and became a spirit envoy who slays monsters.

This cute yet dashing katana-wielding girl became my bodyguard: Jiang Yunling Yichen. But no one knew that I, dismissed as a spoiled young master, was about to become the strongest spirit envoy of the age.

Should I spend an ordinary life with Ritsuki, or become the strongest couple in the world and save it…