 If you liked
Tesagure! Bukatsumono
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 ...then you might like
Peeping Life TV: Season 1??
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The voice acting seems weird and realistic in those shows ? no wonder why, I think they used the same process : give some context, characters to the seiyuus, let them speak freely about it, and AFTER the audio recording you make all the animation based on what they said.
That's also why they use cgi models and motionless backgrounds most of the time in this kind of anime, since they're doing the audio before all the animation.