Japanese for Mk2 during the story, English for post-true ending-- as my part consists of the CPUs on the front, IF, Gear, Uni, and Compa on the back.
Having played the Japanese version first-- I can't get over not hearing those voices when playing the story. Though I DID play the story in English my first run; true end olol, just to see what it was like.
Pore, he is MIZUMikomi. Mizu is water. Water is formless, constantly changing shape, adapting to the surroundings... To succeed in life, one must be formless, like water...