I can't even fight Mokou with things like this!

She's been ignoring me since then!

...You did say something pretty mean to her.

I'll research hair care at the bookstore!

And Master will develop something to turn hair black in a flash!

Roger! Of course, as a last resort, we can use this black liquor. Just leave it to me! Black liquor: A waste product from paper processing, mostly used as biofuel.

What's that!? No way!

Ugugu... "Graying" was a bad word after all...