According to sources in Nicaragua the Taguchi Vs Budler bout is pretty much a done deal, with a date of May 19th and a venue in Tokyo looking to be announced shortly. The winner of that bout would be then mandated to take on Nicaraguan puncher Felix Alvarado (31-2, 27), with that bout looking like to take place in either the late summer or at the end of 2018.
Although we are pretty confident about Taghuchi Vs Budler we really haven't had much else reported about the card, though it is likely to feature IBF Minimumweight champion Hiroto Kyoguchi (9-0, 7) [京口 紘人]. He's not been very strongly linked to anyone as of yet, though a bout with former WBA champion Byron Rojas (24-3-3, 10) would be a very interesting match up and one that looks possible given that Rojas appears to be getting over-looked by the WBA champion Knockout CP Freshmart (17-0, 7) [น็อคเอาท์ ซีพีเฟรชมาร์ท], who was ordered to face Rojas though is said to be close to securing a fight with China's Xiong Zhao Zhong (27-7-1, 14) [熊朝忠]. Originally thr WBA had ordered Knockout to face Rojas, but it looks like the WBA have allowed the Zhong bout, and it could open the door to the Rojas Vs Kyoguchi bout, which would be mouth watering.
Again my of Kyoguchi's future is speculartive, but with Nicaraguan sources reporting the date for Taguchi Vs Budler the pieces do fit for a very good looking double header.