The announcement in question was that former world champions Takashi Miura (29-3-2, 22) [三浦 隆司] and Toshiyuki Igarashi (21-2-2, 11) [五十嵐 俊幸] would be in action in action on May 7th, in a card set to be shown on G+ and take place at the Korakuen Hall.
For Miura, a former WBC Super Featherweight champion, the bout will be his first since his loss to Francisco Vargas in a bout widely regarded as the 2016 FOTY. The "Bomber" has taken plenty of time to rest his body after that fight and will be hoping to pick up a straight forward win here before a potential rematch with Vargas later in the year. The fight will be Miura's first at the "Hall" in almost 4 years, with his last appearance there being a 2nd round TKO win over Desson Cagong, though will amazingly see him fight at the venue for the 24th time in total, with the first coming back in September 2003.
Although the hard hitting southpaw turns 32 a week after his upcoming fight it does seem like he's still improving and we'd not be shocked to see him reclaim a world title before he retires.
For Igarashi, this will be his first bout since a technical draw with Jonathan Francisco last November. Incidentally he has fought his last 5 bouts at the Hall, and this will be his 19th bout there, where he actually made his debut almost a decade ago. The former WBC Flyweight champion has spoken about wanting to claim a Super Flyweight title, though it does seem plausible that this bout might be fought closer to Flyweight than Super Flyweight.
Igarashi, who is now 32, will know that if he's to get a chance to become a 2-time world champion he will need to impress, and sadly for him it's been a long time since he impressed.