Yomi practically froze. Who wouldn't. He thought his master had... No... Obviously not. "I can't believe I actually doubted whether or not you had survived the attack on Shizukesa." He said as he turned to face his master. "Seriously... For a senile old man you really do get around, don'tcha." Yomi added making a point not to get all emotional and stuff. Though one might notice the happiness present in his expression.

"That's no way to speak to your elder's young man." Kasumi said in a stern tone. She seemed to be taking up the role of a mother despite not really having the proof. She just knew. She refused to believe Yomi could be anything other than her son. Hiro, of course, saw the resemblance and felt Yomi fit the bill as well. And there was no way he'd disagree with Kasumi. Still in this situation he couldn't let his emotions cloud his judgement. There was still a chance yomi wasn't their child. 

"So old man. How are you gonna prove whether or not I'm the Shogun and his wife's child?" Yomi asked curiously. Even if she turned out to be his mother he couldn't just follow her every word. He was his own person.