39 Monster cores? Gemstones? (1)

"What's your progress Captain?" asked an old voice over the monitor that stood in the government's communications center.

"W-we're still trying to track him down General. However we've managed to recruit other talented individuals in the meantime," replied Agent Ria, beads of sweat dripping down her forehead as she realized that she was slowly running out of time.

"So are you saying you're close to completing the second floor?" asked the General flatly.

"N-no General,"

"It seems we made a mistake in placing you at such a position, agent Ria. There are others there who might be able to fill in your..." the General's sentence was cut midway by the sound of a match being lit.