The Regression Of Calamity-Level Monster Tamer

Kang Si-woo, the Tamer who was called a Human Calamity.
His wish was only one thing: ‘To bring down the Tower.’
The moment the end came into view, he was betrayed by his comrades and made a contract with the Kaiju that had been eagerly coveting him in order to cause maximum chaos…
‘……That’s right. I’ve regressed to that time 10 years ago.’
If that’s the case.
‘This time, I’ll truly become a calamity.’