Ranpu Ken Kumori (Light and Shadow)
The Ki-Kyohaku Kudo, otherwise known as the spirit star gates, are large crystals on special plinths most are at least 10 ft tall. They have an old language apon them that’s states the name of the crystal and additional information on the plinth itself. Sadly with most of the crystals on the world the people have only ever been able to translate the name of the crystal but nothing on the plinth itself. It is a complete mystery and a lot of scholars have tried over the many years to decode these plinths to find out more about them, some know more than others and some secrets have been unlocked but all those are being kept secret, by those who have figured them out.
One major thing is known about the crystals, and that they are a source of natural Ki and those who are Ki users can by touching the crystals rejuvenate their own Ki. Even those who are not Ki users do have a good feeling after they touch the crystal, which is why many people touch the crystal as they feel it will give them good luck.