C79 Bombs.

In the spacious room.

Sharaf looked in the direction of the underground tunnel and asked Diantha, "Is the one down there going to be protected?"

"It's a bit troublesome," Diantha muttered to himself as he frowned. He wanted to reject the offer, but he stopped himself from doing so. Tsking, he said, "... Let's do it."

Sharaf turned around and looked at Mask with a smile, "You heard it too