No, once time they were getting it on but nothing happened. While they were making out they both had ears and a tail...since they were turned on ٩(๑❛ᴗ❛๑)۶
No, he already knows that Haji is half-human. Remember Horang telling Gunwoo everyone at the club is half-human. Thats why Horang proposed to Hwji to meet the witch.
Wait so does Horang thing that Haji is human or something? I’m a little lost there