Mochi serves as only a very temporary distraction, drawing the elder Hamada's attention for only a few moments before his focus is right back on the amazing statistical anomaly before him, but...

Tadashi's eyes flick between Hiro and Cass several times, that growing excitement quickly fading as concern and confusion turning down the edges of his mouth and forming a furrow between his eyebrows. Tried to tell her what? Why was she looking at him like that? He risks a quick glance down at himself, searching for some sort of abnormality that would explain the absolute shock he's getting from his aunt. That guilty avoidance from Hiro.

"Aunt Cass? What's wrong? I-"

He cuts off when he feels the slight tremor in the hand on his cheek, one of his own larger ones automatically rising to cover hers. To support. Something's very wrong and he doesn't know what, but then suddenly Cass starts to cry and the only response he can come up with is to try and pull her into a hug.

"Hey, it's okay..."

Except maybe it's not, but they'll find a way to make it okay. They always have.