That "accent" is due to our standard English teaching method that builds up an on-the-fly bidirectional translation layer on top of pure Japanese internal monologue. We're trained all the way from middle schools to college/University to do this complex rule-based word transposition and word-for-word substitution technique and that is unnatural as anything and slow as, like real QEMU. This is also why many dumb-faced Japanese people with some English skills are rather quick to issue and respond to fewer-words commands with highly technical expressions("don't lubricate [that] receptacle") but are far slower at returning verbal responses with higher word counts("I'm already 5 minutes into the future from the point I was to be there"), because they're doing it and it's not just a complex multi-parallel but also kind of an exponential time process.

I'm done with that method for better or worse, and I suspect my "tone" in literal English should not even be convincingly Japanese. But it's still way harder to do English, and for the vast majority of us who aren't demonstrably English speaking, it's just their precise translation skills coming with massive overhead.