@The dark hero Was that in the novel? Because I can't find it in the manhwa. I do know that to do that, and do that this round, he would have had to have some massive healing in just three days and clear region 5 -with Cain and the twins there.
The Galactic Navy Officer Becomes an Adventurer
by Takuma Tomomasa , A_Itoh
Available on mangabuddy for reading, and for sale at https://www.amazon.com/dp/B0BT6V7CMM
by Takuma Tomomasa , A_Itoh
Available on mangabuddy for reading, and for sale at https://www.amazon.com/dp/B0BT6V7CMM