I've linked Aki Hata as Hair & Make up artists, as 畑 亜貴 is credited in those roles in the booklet. I am not 100% certain it is her, but she is mentioned on thee B-Univ wiki page (
https://ja.wikipedia.org/wiki/B-univ) as working with them in the roles of Lyricist and Arranger. It seems more likely that she may have helped on this album than for there to be two people named "畑 亜貴" who worked with B-Univ.