Luke wasn't completely satisfied with that explanation, but in the end, he decided not to voice his concerns about it. Besides, it would be better to destroy the plans of the bastards who wanted to invade the Earth as soon as possible. Since Luke didn't use his coins the other night, he had quite a lot, so he was expecting to get even more and then buy something amazing in the shop. That certainly will increase his chances of succeeding in the next mission…
"We contacted the group that is hiding here, and they said that the Grivens appeared on the second day, so their numbers around the crystal are pretty high," Billy said. "Did you deal with a similar situation, Luke? How did you solve it?"
"Destroy the crystal as soon as possible to avoid giving the enemy the chances of increasing their or calling a boss," Luke said. "A boss monster of this type of enemy will be unstoppable… perhaps he can even destroy a plane of this size."