

The 5 other people that you saw later in the chapter is his friends and the blond waitress is his girl. The dude, the black-haired high-schooler one that speaks English also the newly transferred triplet's classmate you saw, he's Takaya. However, if you still want the explanation about the whole story of this special edition, you'll need a quick back story for the other manga: You're basically spoiling yourself for Yuki wa Jigoku ni Ochiru no Ka manga if you read the crossover first.
Why? Well, you might want to read the other manga if you want to know the whole story and get the emotional investment that Hiro-sensei put there. If you try to read the plot or summary from the Wikia, there's a 100% chance that you'll be still confused. Yukiochimura ni Oujosama! is basically a crossover epilogue from 2 of Hiro Fujiwara-sensei's work that is Kaichou wa Maid-sama! and Yuki wa Jigoku ni Ochiru no Ka ( Does Yuki Go to Hell).
