City of Sin (Yanyu Jiangnan) - Vol 2 Chapter 46: History

... own his inspirations in the diary, and his research indicated there was more than just one planar invasion. The effects of these invaders varied, as did their forms. Not many were human, but human invaders weren’t particularly rare, either.

The oracles from the God of Valour and other gods did not have much information about planar invasions, but there were still some traces. Two important factors were sent down with these oracles— their strength, and their numbers.

Insignificant inv ...