Side Story: Thor, Lukia, and the '10,000-Year Recording Pen'

I tried making something called a '10,000-Year Pen' from the Hero's World.

One afternoon.

I said this to Lukie, who had come to the workshop for tea.

"By the way, a '10,000-Year Pen' is a writing instrument from the Hero's World."

"How interesting. What sort of thing is it?"

"It's a pen that stores ink inside its barrel. In this world, people dip quill pens and metal pens into ink before writing, but this one doesn't require that."

"I see. How wonderful. Did you recreate it?"

"Yes. More or less, but..."

I placed a metal pen in front of Lukie.

"The barrel contains thick ink and a 'Water Magic Stone.' When magical power is fed into the grip, water comes out of the 'Water Magic Stone' and delivers diluted ink to the nib."...