ANIME ARC chap. 6

So let's go back to sonic place. After that incident, sonic is stay in nagi's mansion until he find some clue about chaos emerald.
"Sonic kun, would u like to take a hot bath??" Ask maria politely
"Oh, that's nice of u, maria san. I'll take a bath."
"Please, this way."
While maria is taking sonic to the hot spring, nagi and hayate were having a discussion.
"Ojou sama, do u have something to say??
"Well, I just wonder, if I really could meet other anime character, that would be my biggest dream!!"
"Eh, ojou sama, u know that this accident happen because of eggman, right??
"Yeah, yeah, I know that, hayate. That wasn't nice to thing say. Anyway, why don't u take a bath with sonic?? He needs friend.
"Uhm, okayyy, but what about u, ojou sama?? Will u be okay here by urself??"
"Nah, I'll be fine, daijoubu."
So hayate taking a bath with sonic, leaving nagi alone in her big room.
"Baka!! Why don't I just said I need him to accompany me?? Baka!!"
Nagi was frustated because she wasn't able to tell hayate. While she was gumming herself, suddenly her window was broken.
"what the??? Who's broken my window????"
An egg with an X mark appear in front of nagi. What could this event turned out to be??