I, the Night Watchman, Hunt Night Demons

Protagonist: [Naturally sly] + [Overpowered from the start] + [Ultimate cross-dressing enthusiast] + [Adorably wholesome]

The Tianwu Dynasty is at peace, and its people live in prosperity.

Ever since that day when a meteorite from beyond the heavens fell, the wilderness of the Central Plains has been shrouded in white mist, and one strange occurrence after another has followed. The night ghosts... have come!

They are impervious to blades and spears, and only solar flames can hurt them.

Simple-minded and eager to serve his country, Dong Xi resolutely joins the [Night Watch], becoming a night patrolman at the Night Office. Using his fantastical mind from the twenty-first century, he fights the night ghosts!

Note: I'm unusually vicious. I take on night ghosts with a knife, and I'm so brutally ruthless that I'm even more horrifying than they are!