"Not long will pass before Bifrost Stone moves to the second level. After absorbing mana entirely from their bodies, any mana their bodies produce is absorbed by Bifrost Stone.
The second level begins by sending the polluted mana it produces into the body's interior, causing the body to absorb it, but it was deprived of the pleasure of mana. The second level signifies weakness, as their bodies start to weaken.
The third stage begins with the polluted mana poisoning the victim's body faster and faster. The strange thing is, if you're infected, the mana begins to poison you more and more.
The only option Leon and Alice have now is to move forward, praying to God that they won't be attacked by creatures stronger than them.
Therefore, step by step, Leon and Alice move forward, and they soon discover that the passage wasn't initially lit with any torches or glowing mana stones to illuminate the passage.