One could never see the real sunlight in the underground neighborhood. The alarm clock was the only device that would tell the arrival of the morning.
Under such circumstances, the fact that the humans on this planet could still maintain a societal order that was consistent with the biological clock was almost a miracle.
Woo! Woo! Woo!
The alarm clock chimed nonstop on the cabinet, feeling like a rooster was crowing in the middle of the night.
The large yellow cat in the photo was staring at the crowing alarm clock with his dark eyes, probably wondering where the rooster had hid.