Ace was startled when he heard this stoic voice, and he couldn't help but think about the system's voice for a moment. But he knew it wasn't the system since this voice was far more majestic.
"System, what the hell is going on?" Ace asked as he was slightly panicked, especially about that strange riddle and the 90-second deadline.
"[This is the Door of Riddles. As long as you answer the riddle, you'll be able to unlock the Door of Ascension! But if you fail, then you'll be teleported into the Heavenly Void Prison, which is akin to falling into the Heavenly Will's clutches!]" System replied.
Ace wasn't expecting the system to really answer, but now that the system did, he at least got to know what was going on, and he didn't like it in the least bit.
But since he could bypass this door of riddles as long as he answered the riddle, this means he wasn't totally screwed, and he had a fair chance.