Teo hundred years after Shiba got some guidance from Ravier, he felt that he was ready to face the Wind Tribulation and become a Wind Law God.
At the start, he wanted to reach that level first with the Sword Law, but he felt that it would be better to face the Wind Tribulation first. Still, it wouldn't be difficult for him to face the tribulation for the Sword Law. It was just a matter of what order to choose and not to mix them together.
He could have faced the Wind Tribulation just after speaking with Ravier, but he wanted to internalize what he learned before, so he ended up spending two hundred years.
At that moment, he didn't feel strange counting the time in hundreds of years.
That time might have felt like an eternity when he met Eini for the first time, but the more one lived, the less it mattered.
