I see Yuuka administered some sisterly guidance.

It would seem Yuka wasn't having any of that nonsense.

Minoriko must be the secret daughter of naked Snake or something like that to be so much interested in cardboard box

This'll sound mean, but this seems like the Happy Copy-Pasta Adventures of Minoriko and the Cardboard Box.

Then again, Danbooru does sound like Cardboard in japanese.

Don't ask where I was trying to go there, I don't really know myself.

My entire life was unlimited copy box works.

So they are.