Abyssal Chronicles - Chapter 11 - 12:

... mple deep within the Winter Forest. This fact is almost universally known across the continent today.

In the eyes of most scholars and clergy, the Demon Temple was built by a Demon Lord in ancient times. After being defeated by the great goddess, the demon Lord, unwilling to accept defeat, left an endless curse within the Demon Temple to bring endless disasters to mankind, ultimately to exterminate all life on the continent.

The power left by the Demon Lord infected and transform ...