I'll ask you one more time!

What's rock!

6*9 = 72! Rock (rokku) 6 = Roku 9 = Ku

Cirno-chan, it's not that type of rock...

And it's wrong...

You idiot! Rock is a scream from the soul!

Screaming like an idiot will only result in idiotic songs!

And 6*9 is 78!

No, it's 79!

You're both idiots...