The protagonist is invincible + the family is invincible + the system + the only female protagonist + decisive in killing + not a saint + crushing all the way.

Long Fei: In order to protect our loved ones, each of us should be assigned a great emperor as our protector!

What brother wants to be the emperor? Then give him weapons and equipment. Then add ten emperors as a foundation!

My cousin wants to do business, so give him 10 billion spirit stones as starting capital!

What big brother wants to marry the princess, but the emperor doesn't agree. Then grab, grab, grab, grab, grab