Spoiler up to chapter 12 Nothing too detailed . . . . . . The oni will appear at the end of chapter 12 ( ̄へ ̄) So if you have read the novel, you should know that he finally got a human body, and it is so cute! Finally a manga version.
I knew shi hoon was gonna do that but, WHAT'S GONNA HAPPEN TO SHI HOON NOW....now that mother and daughter are united are they now gonna lose a son right after the father dies in sacrifice....DAMN
I though for a moment there she will say "will you please marry me" jaja