Hi.
Japanese people generally have a low nose height.
As was said in the movie, they were called "flat-faced people.
The base of this character is Asian, so the nose is lower in height.
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Reina: Can I go into a classroom just because school is not in session?
Reina:Is this your seat?
Reina: Put me on your desk... you're going to be pissed, okay?
Reina: Eh? You want to ejaculate here?