A sad estate, me, caged for life and never in the wild.
Yet die I must an eye to see that you might have a child.
To do the pregnancy test, you need a pink-eyed white rabit...only bred in captivity, never found in the wild.
Now you see me, now you don't. I come and then I flee.
Like magic tricks I come, I bite and none can e'er touch me.
A reference to a spirit Monster. The play on Trix the white rabbit. None can touch is a vague reference to his ability to attack directly (wanted to convey "stop" or "block", but alas.....)
Inaba it is! All yours Monkey boy!!