A new character revealed early for tri. part 4 was Bakumon...We first saw Bakumon (nearly) hidden on the theatrical poster for tri. Part 4 back when tri. part 3 had just come out.We now know who will play the mysterious character in tri. Part 4 in just a few days!It will be VA/Idol Kaori Ishihara.She's had numerous roles including in the recent film Popin Q, which Toei had framed as a big part of their anniversary.In previous voiced appearances Bakumon was played by Hiroomi Sugino.If you are going to post please be mindful of people who don't want spoilers.