Hiro is eating lunch with his friends. All eight of them. Tadashi is sitting right next to him, but is deeply immersed in the conversation with both sets of friends. Hiro is, or at least appears to be, content with just listening. The conversation is actually made up of two conversations: the Honey's, Gogo's, Wasabi's and Tadashi talking together in one, and the Fred's in the other. While most of their friends had quickly adjusted to their counterparts, the Fred's still can't get over having another comic book science enthusiast to talk to who has the same passion as themselves.
Everyone is having a blast. However, Hiro is now slightly aware of his earlier doubt. He is still not sure what of, but now he can feel the darkness that wasn't there before.
As the end of lunch nears, Hiro's friends and their counterparts break off into groups like the Fred's, somewhat of a tradition that quickly formed. This left Hiro with Tadashi. With all of the excitement over the interdimensional portals, Hiro hasn't been able to spend as much time as he would like with Tadashi. He has also noticed that while his friends can't leave Tadashi alone, Tadashi's friends haven't shown as much interest in him. Sure, they were all super excited when they first saw him, but their happiness was mainly for Tadashi, who was absolutely elated to have his baby brother back.
Lying down onto his back, Hiro looks at the sky. It is a peaceful day. Warm, but with a slight breeze to make it comfortable. A few lazy clouds drift across the sky. Hiro closes his eyes with a sigh, a slight smile on his face. His peace, however, is soon broken when Tadashi grabs him and flips the young teen over his shoulder.
"Tadashi!" the boy cries out, half annoyed, half happy. He pounds his brother's back with his fists, to no avail.
"You want down, little guy? Careful what you wish for!" Tadashi exclaims mischievously. He drops Hiro to the ground and the two boys are once again in a lopsided wrestling match.
Before long, both are on their backs side by side, panting. Still catching his breath, Tadashi lifts a fist towards Hiro. Hiro stares at Tadashi's fist for a moment, then, a joyful expression on his face, completes the fist bump.
As everyone cleans up from lunch, Baymax waddles up to them. On his wrist is a red band, indicating that this is Hiro's version of Baymax.
"Hiro, you are in danger," the robot states, getting right to the point. "Also," he continues, "the shift in your neuro-transmitter patterns has increased to a more noticeable level."
Tadashi looks at Hiro worriedly. "Everything all right?"
Hiro puts on a convincing face. "Of course everything is fine," he says. Then he quickly turns his attention to Baymax. "You said I was in danger. Of what, exactly?"
"Him," Baymax point over Hiro's shoulder.
The whole group turns. They see a man, covered entirely in blue and purple. His face is covered with a hood, hiding the face underneath. In an instant, however, he vanishes like a mirage.
"Will someone please tell me I'm going crazy…" Hiro's Wasabi says, with a hint of anxiety in his voice.
"I'd love to," Tadashi's Gogo responds.
"But, no, you aren't the only one seeing things," finishes the Gogo with a wristband.
"Who was he, and what does he want?" Hiro puzzles, mostly to himself.
"Maybe," Tadashi replies slowly, "We should finish up here and go talk to Aunt Cass. That way she won't be so freaked out she doesn't eat."
"I like that plan," Hiro responds with a slight squeak in his voice.