"They say Gajumaru comes from the local dialect for 'wrap around' and 'weather-watching', see. I was called Kijimuna when I lived on the earth. You can call me whichever you like.
Oh, Suo (sappanwood) dyed my hair. 'Course it's not my natural colour.
Anyhow, why don't we go a round of karate? You'll never beat my pinning technique!"

As well as the timber being used for small handicrafts, the unique shape of the twisted roots is also used for ornaments and decorative panels known as ranma.
According to folklore, fairy-like creatures known as kijimuna inhabit Chinese banyan trees.

Chinese banyan is an evergreen tree found in tropical and subtropical regions. It germinates upon rocks and low-growing shrubs, the trunk splitting in multiple directions and then growing downwards, putting out roots. These dangling roots gradually wrap around the base and trunk of the shrub the banyan is growing on, forming into a striking shape. As the roots thicken, the banyan develops bark. By the time they reach the ground, the roots are indistinguishable from the banyan's trunk. As they grow larger still, the roots gain enough power to break through even asphalt and concrete. The shrub that the banyan seed germinated on will eventually wither and die. The Chinese banyan is a species that strangles everything in its way.

Mulberry Family, Fig Genus
Gajumaru (Chinese Banyan)