Slayzer folded his arms as he waited for Emma to sort herself out, all this hesitating and for what? They wouldn't get any further along if she was going to freeze up every time she was told to do something that happened to go against those simple human morals. He supposed it wasn't a surprise that humans weren't as aware of such things anymore, the way the cosmos worked, healers, demons, magic, certainly this confining ability. Hell, HE didn't even know about that one until he'd experienced it firsthand.

Once she was done striking the rock, he spread his arms in an almost welcoming fashion for the lance that came from the ground. It pierced him as expected, though it took a few seconds of it burying into him before he vanished into an explosion of red light. It cast across the area widely in a shower of red sparks and streaking lights that soon surged towards Emma, darting this way and that through the air, mimicking that same lightning pattern his energy seemed to be modeled after before it absorbed into her, the familial presence of that which had rightfully destroyed the one it belonged to.

Within moments, Slayzer had reformed in front of Elise, though the woman's demeanor towards him remained cold, defensive, he took it as a sign to back away and simply turned his attention to Emma once again as he casually cracked his neck either way. With such a large amount of mana filling her, there was no doubt that she would feel the difference this time. Tiredness? Likely gone. The drain on her power? Eased away the void it had created being filled with new energy, mana power gained from slaying the white-haired demon,
"Well? Give it another go, strike another rock and compare the difference, you're stronger now." He stated rather blandly, maybe she wouldn't break it as easily as he did, but there would be an evident difference in how much damage she would cause, "Though you really should have done it with something you're more used to, like magic, but I guess straight up punching it works just as well."