1
The man gets up and walks up to him after emptying his flask and says-
"How did you find your way here?" and lets out a very strong aura causing Tatsuya to fall on his knees.
'My knees! There's no strength in my body.' Thinks Tatsuya and looks at the man with hostility.
"Oh! Now, that's the face you should be making!" he says and smiles. Then he walks back to the barrel and lifts the barrel. He takes out another flask and after closing the barrel he sits on it and starts to drink from it again.
Tatsuya becomes able to move again and he gets up on his feet, sweating.
"What was that?! It was like all my strength just disappeared."
"That was aura-exertion. An innate ability everyone possesses. You can unlock this power quite easily. No strain. But the only thing you need is…"
"Shut up…"
"Hmm?"
"I don't know who you are but I can say for sure you're strong."