Well, ok, he's not a eunuch anymore.
'cause only a eunuch wouldn't go *boing* upon seeing her.
Now he's really got problems.
When it was only the one girl he reacted to, it was one thing.
But I don't know that she's going to be into dealing with his "problem" when he's reacting to other girls as well.
That really does change the chemistry of the situation.
So... depending upon just what type of H manga this is, did the old man of the mountain do anything to make him more appealing to women when he's in need?