I actually tried translating it sometime ago, but of course I don't know Japanese or French. But I did get help from people so to be honest it may be pretty much done...
Godzillaradio was kind enough to help me with a bit that didn't make sense in the French translation and was Kansai dialect heavy in Japanese. When Housei exits the gallery and says (in the French version) "I dunno who did that." With GodzillaRadio's help I changed it to "Uhh, they seemed startled." Also dael who knows French and some Japanese modified parts so I will credit them too.
I also added a few lines that weren't in the French translation. "Samui" - It's cold (when he's standing outside the TV studio freezing). And "shirande" or "shiranai" - I dunno or I dunno about this (when he's outside Parliament and feels unsure/scared to disturb the peace).
I was waiting to see if someone I gave the file to for further checking/tweaking might release it but I think they got busy. I'll tweak it a bit, credit those who contributed and release it as is sometime. Someone else can always fix it up further if there is a glaring problem I guess!