This is a true article in the cloak of spirit

An outwardly aloof but inwardly asuming master × An outwardly gentle but inwardly dark apprentice.

Clearly they are brothers, but they are as different as night and day. The elder brother shines like a star in the night sky, while the younger brother is like dirt and dust, not worth looking at.

My parents had me nailed inside a coffin for a ghost marriage because they said I was blocking my twin brother's luck. I tried my hardest to break open the coffin, but the jade pendant in my hand started to heat up and a voice inside said it could save me, but only if I agreed to marry it. In order not to marry the persistent, deceased, perverted man who had been pursuing me, I agreed to marry the jade pendant. To my surprise, a person was hidden within the jade pendant. This person was the root of everything. Even the man chasing after me had ulterior motives.