Hiro continued grinding after defeating a boss monster that suddenly appeared in front of him. He still had energy left to catch up with other players who had higher level than him, and he was determined not to stop until the sun appeared in the virtual world.
While swinging his sword non-stop to finish off the normal zombie-bat-shaped monsters that re-spawned in the same location, Hiro could still use his brain to think about other things.
After getting a special quest that could only be done during a full moon in that world, Hiro had to look for information about the moon cycle he couldn't find anywhere so far. For the time being, Hiro only relied on the moon in the sky.
The moon had entered a cycle known as the gibbous waxing phase. Which meant it could be predicted that a full moon would come in the next few days. Hiro had to make sure that he did not miss it. Because if he missed it, Hiro would have to wait another month to execute the special quest.
Splat!
Ding!