Ryuutaro raised an eyebrow at the food. He'd heard enough stories by now to know where this was going. Then he shrugged, opening his fan to clap it shut a second later and gave Bianchi a nod.

He absolutely didn't care whatever she did to Shamal with this food, but he was fairly sure his presence and the fan would be enough to get Hayato off the doctor's case for a moment.
He walked over to tug on his boyfriend's sleeve, get him to turn and confront him with a fan-shush, while Bianchi... would possibly cause Shamal considerable pain, but that was none of his business.
"Hayato, I think you should remember that you're currently recovering from an injury, so you might want to act according to that."