Originally Hanai, a very exciting prospect, was set to fight Boy Tanto (9-16, 1), a limited but game fighter who had been in with a small list of "name" fighters. Tanto was then replaced by countryman Demsi Maufoe (9-4, 6), who looked like a genuinely atrocious opponent and had been taken out in 37 seconds by Richard Claveras back in January.
Now it seems that Manufoe has also dropped out and been replaced by Bonis Purba (3-3-1, 3), who has fought his last 2 bouts at Bantamweight and was last seen being stopped in 3 by Petch Sor Chitpattana back in October. It seems like it could potentially be a problem for Purba to drop down to Light Flyweight for the bout though he has, in the past, fought as a Flyweight.
Hanai is viewed as a really promising fight following a stellar amateur career with 48 wins though even he has got to be a little frustrated at all these changes in opponents, especially considering that all 3 are a step backwards from his last fight, an 8 round decision over Filipino foe Crison Omayao.
(Image courtesy of http://home.owari.ne.jp/~yokob)