What is the personality type of Akame? Which MBTI personality type best fits? Personality type for Akame from Ginga Nagareboshi Gin and what is the personality traits.
Akame personality type is INFJ, so it's a stretch to call this a "fake".
In the anime, Kazuki is a bit more realistic. He is a very straightforward character, and his personality is pretty much set in stone from the beginning. This is not the case in the manga, which only covers the side stories that were not adapted into the anime. In the manga, Kazuki has been portrayed as a somewhat childish character who does not always know what to say or how to act in certain situations.
This is what fans of the manga call "the Kazuki side". For an INFJ, it's pretty normal to have this sort of dual personality. The anime did not portray Kazuki like this, so it's hard to say if this is an accurate portrayal of INFJ.
Kazuki's dual personality might be more like ENFJ, which has many natural leaders. This type tends to be less realistic than INFJ, because ENFJ often does not know how to act like INFJ. Indeed, this is why Kouki tends to be more realistic than Kazuki.
Kazuki's fake personality is more like the default personality for many ENFJs.