After Theo killed the cultivator from the Dark Planet, he was on the alert with the visitors from the other planets. After storing the body of the Dark Planet cultivator, Theo did not know whether to be happy or sad to have other planets send beings in the Monarch Spiritual Realm to serve as nutrients for him. If he seemed to think about it a bit, they sent powerful cultivators to get rid of him, but what was about to happen was they would further strengthen Theo.
'I need to kill them all, without letting them fight back...' Theo knew that if he let them fight back and grab the others' attention, he might scare the other cultivators and run away.
Theo wouldn't go after them if they didn't mess with him, but since they had taken the trouble to come to this planet with the intention of killing him, Theo wouldn't let them go alive.
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[Are you sure you want to spend 2.000.000.000 system points on [Supreme Thunder Divine Sword] Rank 8 - High].
