棋物语 Stick Go story

The girl in white suddenly opened her eyes, trying to turn her head to look around in panic. The next moment, the hair at the back of her head was in great pain as if it was torn. She desperately lowered her head again, heart tightened.
The positions that used to be the hands now turned into two white balls, glowing with a hazy cold light.
The arms seemed to suddenly become pale and thin, and white balls were also embedded in the elbows. The tightly bound "legs" and "feet" were also shaped like this.
Kidnapping? captivity?
Human-body modification?
The girl, mind blank, heard a distant voice that seemed to have magic power—
Welcome to“The World of Stick & Go Pieces”