The first of those sessions will feature current WBA Super Flyweight world champion Kohei Kono who successfully became a 2-time world champion earlier this year when he stopped Thailand's Denkaosan Kaovichit back in March.
Kono's session is on May 6th and will be held at a store in the Donki store in Meguro.
Although we're not 100% sure on the complete details of the session we believe that Kono will be charging 1,000 yen (about £6 or $9) to take a picture with him, get an item signed and to shake his hand. The receipt for the meet and greet will then act as a lottery ticket with 3 lucky winners receiving a signed glove from the champion.
The first of Uchiyama's meet and greets will begin at 1PM local time and finish at 2PM whilst the second session will be from 4:30PM until 5:30PM. Sadly we're not 100% sure where these are, though we believe the second will be in a Donki department store.
As with the Kono session it costs 1,000 yen and will entitle you to get a signed item, a photograph and a handshake as well as a chance to win a signed glove, with again 3 lucky winners getting a glove.
More details on these events can be found on Donki's website:
The details of Kono's event can be found here
whilst Uchiyama's events are here.
(Note, these are external links and we are not affiliated with Donki in any way, shape or form)
(Images courtesy of Watanabe Gym and Donki)