Daisuke Namikawa
Yu was designed by Shigenori Soejima who aimed to create an ambiguous character who could appeal to most players by way of reflecting several feelings towards them and through his mannerisms. For the anime, director Seiji Kishi expressed difficulties in giving the character emotions without damaging what the original staff created. The character is voiced by Daisuke Namikawa in Japanese and Johnny Yong Bosch in English; Both of these actors expressed difficulty in voicing him with Namikawa finding his social life challenging while Bosch also had to voice another major character in the anime.