There is a legend among demons about an unusual deer Sinum, who differed from his relatives with large spreading antlers. Some believe that this is just an animal, others - that it is a spirit. In fact, Sinum is the reincarnated demon Train.

He was a strong demon, whose power could be the envy of many. At the same time, Train was not a warrior, but an ordinary blacksmith: he forged sharp swords and axes, and in his free time he made toy balls of different colors for children.

Train was kind to everyone, even to those who tried to offend him. He himself never started fights, and fought only to protect those in trouble.

When the curse of darkness and cold fell on the lands of demons, Train went north in search of answers and came across a castle made of ice. There he defeated the king of cold and received his crown. This artifact could give unlimited power over the cold. The demon could even destroy people in one fell swoop.
But he did not do this. Trayn was sure that such power would not lead to anything good. Therefore, he destroyed the Icecrown, breaking the curse of eternal cold, but he died himself, because the magic of the artifact was too strong.

The gods saw the nobility of the demon and gave him a second life. They turned him into the noble deer Sinuma, which can sometimes be seen in the northern lands. He helps children and sometimes, out of old memory, gives them small toys.