Lied, Clara and Purson being the first to hug him feels oddly appropiate. Rather, for a second there I got confused thinking Alice was there instead of Lied, and was asking "Wait, Clara and Asmodeus I can understand, Purson really appreciates Iruma after all the Musical Festival stuff, but why isn't Lied there?".
But with how much admiration instead of pure emotion Alice feels for Iruma, I get why he wouldn't glomp him as soon as possible.