The Japanese fighter took part in some light exercises, and worked the pads before as well as spoke to the media. Muranaka took a round table type approach to his dealings with the media, sitting on the floor with the media people at the work out rather than hosting the event as an official press conference.
In regards to what was said Muranaka stated he had sparred about 80 rounds to prepare for the bout, less than is typical for a world title fight but he had suffered with sickness earlier in his camp. Among those he has sparred with have been WBA Light Flyweight champion Ryoichi Taguchi (25-2-2, 11) [田口良一] and Japanese Super Flyweight champion Ryuichi Funai (27-7, 19) [船井 龍一], with Funai acting as a virtual Yafai.
Although fighting outside of Japan for the first time Muranaka does sound confident and the game plan seems to be all about pressure, looking to put Yafai on the back foot and break him with the pressure.
Muranaka also revealed that he will leave Japan on May 7th, less than a week before the actual fight. That doesn't give him a lot of time to acclimatise, but it seems clear that he and his team have done their research on the UK and won't be travelling blind to the country.
(Image courtesy of boxingnews.jp)