The cat and the rabbit is about Luca and Natsume from their childhood as recounted in chapter 62.
The Cat and the Rabbit
Was many a year,
When most lives fell,
The cat and the rabbit
Now have a tale to tell
In the foremost years
The rabbit was alone
The cat then asked
Why do you moan?
The 2 were friends
Forever to the end
But one was to be punished
And the other to fend.
