A video of a hand-drawn sketch transforming into a 3D interior in a hand-drawn style.
0:00-0:02, drawing is completed, hand and pen move out of the frame.
The subsequent camera shot seems to "drill" into the drawing, starting in the world within the painting. The interior in the world within the painting is expressed in a hand-drawn artistic style, accompanied by slight indoor roaming perspective and surrounding shots. The artistic style of the world within the painting needs to be highly consistent with the previous one.