"Just now, the sound you made wasn't loud, right?" Fatty lowered his voice with a strange expression, but why is the echo so clear?
The echo in the staircase is even louder than Curly Hair's footsteps.
This doesn't conform to the laws of physics!
Moreover, the rhythm of the echo is off, and it doesn't quite match Curly Hair's steps.
Fatty had a terrifying suspicion in his mind.
Thinking about it, he also slowly walked down two steps, the rustling sound of footsteps echoed in the stairs, and half a second later he heard two "thump thump" echoes.
"This isn't right;" Fatty's face turned green, "It seems like there aren't only echoes of our footsteps."
Although the number of sounds matches, neither the volume nor the speed is right.
It's not just the echoes; it seems someone is walking on the stairs with them.
They take a few steps, and the person follows a few steps, because it's overlapping with the echo, no one noticed at first.
