The Duo would go outside to meet the rest of the Quartet, and Imgor would write a rune outside in the dirt. After expending all his energy, he gets no contacts as with his relatively small mana reserves he simply doesn't have enough power to 'brute force' it to be any higher, nor do any sprites in the area seem to be interested in the rune itself very much. After hitting rock bottom in terms of mana in such a short amount of time, he'd feel a large urge to cough and thus do so, a small amount of blood coming out. That's... bad. He probably shouldn't expend so much. Ever again, really. Imgor can tell he'll be basically fine, though, so he has that going for him.
Sapphire, after placing her hand on her mark, would feel a certain air of uneasiness, as if something was watching her from far away. It'd dissipate almost immediately, but she would've gotten goosebumps in that amount of time. However, Sapphire would note Ruby was ready to go regardless, and doesn't even notice the small amount of mild panic her Master mysteriously had for a second or two. Neither would her fellow Hunters. Alexander and Schulze waited outside, the entire time, and after having his question answered respectively. The Quartet would now all be outside, readying up to go to coalstrike, presumably.