Ogiso animated the part where kozue is crying so from 0:29 to the end should be him.
Source: https://togetter.com/li/99463 "こずえの泣きの原画は小木曽さん"

as a series, I hoped it would have been better than what I got... But I had fun with Occult Academy, and a good part of that was for the nice character acting and action animation moments and (at least in my personal experience) a original chara design