Her shirt says 人外, inhuman person. Also there's 外人, gaijin. Punny.
And personally, I think the sexiest of them all is Kakeshi. She almost gives me shivers. Can't really put my finger around it, she's just so damn... Argh.
...Anyway, does anyone know where I can get this gem's raws? I'm sure some based soul has them. PM me
P.S. I think this work should be marked as shoujo? Since raws have furigana. UPD: Nevermind, marked as 青年マンガ on ebookjapan.