'Challenge Ace and defeat him?'
Leo was shocked by the condition to form a contract with the God of Wind.
Previously, he thought the condition was hard, but he was wrong.
He was utterly wrong because he only needed to challenge Ace and defeat him, nothing more than that.
He even did not need to sacrifice something.
It was as if God of Wind really liked him and wanted to form a contract with him.
[God of Wind asks, how is it, child? Do you agree with my condition?]
"I agreed!" Leo answered instantly.
'It seems like the heavens are helping me.'
He suddenly felt like the heavens were helping him.
He wanted to kill Ace because he suspected Ace was the mastermind behind his brother's death.
And coincidently, the condition to form a contract with God of Wind was to challenge and defeat him.
Killing two birds with one stone!