They both know it's just curry! It's just a thing that happens with onions!! But Shinji still doesn't like seeing those tears! Irrational as it may be! So once Kai returns, eyes clear and tears washed away, that Face he was making has been pacified to the point of making its exit. No more tears, no more frowns.

Washing up the cutting board is a good idea, too! So helpful, Kaito. Good Boy.

"We'll get everything cooked up, and then the meat and vegetables need to be stewed for a while until they get tender."

And after that, the roux gets its time to shine...!!