Cheng Xiao traveled through Douluo Continent and awakened twin martial spirits, but these twin martial spirits were a little special. They were actually the Shadow King Ashborn and the Destruction King Dragon Emperor Antalis in "Solo Leveling"!
"Stand up!"
Countless shadows stood up and became Cheng Xiao's soldiers.
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Note: This is a MTL
3/2/3/4/5 His martial soul is Ashborn and Antares, but his innate soul level is only 1. That is the most unreasonable thing to me.