He did say that (and added a lovely little laugh after answering that just looking at the scores, his win was assured no matter if Shoma landed thatt 4Lo).
He also added that if he were to retire now (of which he made very clear he has no intention to do anytime soon, since there's still things he wants to accomplish), he'd feel safe/confortable leaving the sport to Shoma on Japan, but at the same time, he still thinks there are things he should teach Shoma properly, as not saying he wants to sleep in front of the media ><
(or something like that... Sleep is getting to me)