Since this week's an illustration, I ended rereading some of the older chapters.
I have a new prediction: Iruya is smart and a fighter. Even though he's been key'd, it doesn't mean he's lost. He might end up dragging Asura with him through the gate. We know this is possible since that's what happened to the girl who was bullying Otori (she was dragged to hell by her brother when he got key'd).
It might be interesting to see how Asura will react to being in hell.