Tortured to Death (with VFX)

This video is based on a custom request, so it's quite bloodier than usual.

A girl just returned home when she noticed a murderer carrying a spear already inside. The murderer stabbed her in the navel and twirled it around a few times. The murderer kept on torturing the girl even after she was sprawled on the floor. The girl finally died an extremely painful death.

If you want to see a girl in agony being navel tortured for more than 10 minutes, this video is for you.

No "before or after" clips this time. Try to find the exact minute/second the scene(s) where the VFX was used.