Disclaimer: I don't own Big Hero 6 or any of the characters associated with it- Disney does!

Chapter One

Baymax stood motionless in his charging station in the corner of Hiro's room, his eyes shut in deactivation. He sat in uninterrupted silence for a long stretch of time, before he was abruptly yanked out of his slumber by a despondent sigh from across the room.

Baymax's eyelids slid away from his lenses, and he immediately scanned the room for any signs of life. He quickly recognized his teenaged charge- Hiro Hamada.

Hiro was perched on the end of his bed, his shoulders slightly slumped. His wild, raven hair fell into his eyes as he gazed down at the object he held clasped in his hands, which Baymax realized was Tadashi's hat. The fourteen-year-old's expression was downcast. All of these physical symptoms pointed to the same explanation, and Baymax hurriedly issued a diagnosis: sadness.

The large, fluffy nursebot waddled across the room and stood before Hiro. He stuck a rubbery finger into the air.

"Hello, Hiro. I was alerted by a sound of distress. You appear to be suffering from: sadness. What seems to be the trouble?" Baymax questioned mechanically, tilting his head innocently.

Hiro let out a long sigh and gazed down at the wooden floorboards below him, kicking his feet absently. "It's just... I just miss Tadashi, that's all..." he ran his fingers through his hair distractedly. "I mean, the whole thing with Callaghan ate up a lot of my attention, but now that things have calmed down, there's nothing to distract me from the fact that Tadashi isn't here."

Baymax plopped down onto the bed beside Hiro and wrapped his big, soft arms around him, giving him a clumsy pat on the head. "There, there." He tilted head to peer into Hiro's face. "Tadashi is here, Hiro."

Baymax sat up straighter and projected the videos of Tadashi onto the screen embedded in his stomach. However, once the videos had finished playing, Hiro only sighed again and rested his head against Baymax's smooth, vinyl chest.

Baymax watched Hiro calculatingly. "I am issuing the recommended treatments for sadness, but your emotional state has not improved," he observed, a touch of confusion in his voice.

` Hiro's gaze stayed locked on the floor. "Yeah, I guess not," He finally glanced up into Baymax's face. "I'll be okay, buddy, don't worry, but... I guess hugs just don't fix everything..." Hiro forced a small, sad smile onto his face and patted Baymax's arm, before gently pushing the cuddly robot away and trudging across the room to his computer, Tadashi's cap still dangling from his fingers.

Baymax watched Hiro depart, his artificial brain buzzing with confusion and concern for his patient. For once, he was at a loss of how to help Hiro.

Something had to be done.