C688 A Tough Nut to Crack

"Wu - wuu - wuu -"

In the room that was originally calm, a series of urgent and loud alarms suddenly sounded. The red light kept flashing, showing the urgency of the situation.

"Crack - Bang!!"

A crisp sound was heard and the space in the room suddenly collapsed. A petite figure fell out from the empty spatial crack.

"Damn it, I still failed..."

A resentful voice sounded