Christopher naturally wasn't afraid of zombies; he'd killed living people before, let alone those half-dead creatures.
Still, just to be on the safe side, he made some preparations.
For instance, he wrapped cardboard around his arm with tape to make a shield.
Along the way, he didn't stop those who joined him.
He thought they might come in handy as a shield at a critical moment.
He was confident in his own strength. He just didn't expect a lapse at the crucial moment.
He didn't know where the two zombies came from, sneaking up from behind. Fortunately, he reacted quickly, promptly hiding in the stairwell.
Christopher rested for about half an hour, regaining some of his strength. Listening to the quiet outside, he gently opened the door to the stairwell.
"Ugh... ugh... groan... groan..."
Unexpectedly, two zombies were standing guard at the door. Seeing the door open, they immediately lunged towards him.