While creating Perpanep, Kokuyo focused not on just the paper quality itself, but also emphasized the different combinations of paper and pen that bring out the best writing experiences. They created 3 types of paper that users can choose depending on their writing instrument of choice and preferred writing feel.

The Kokuyo Perpanep notebooks are available in three different paper textures.

Tsuru Tsuru, an "ultra-smooth" paper type that feels very smooth to the touch and is best suitable for fountain pens and fineliners. It is aimed at people who look for the lightest and smoothest writing experience.

Sara Sara, a medium smooth paper type, is the more balanced option and best suitable for ballpoint and rollerball. It feels smooth to the touch with a hint of tooth.

Zara Zara, the textured paper type, is a rougher paper that is geared towards people who love clear paper feedback while writing, and want to hear the pen glide over the paper. It has a grainy touch and is best suitable for fountain pens and fineliners. 

In Japan, double words represent sounds, and the tsuru-tsuru, sara-sara, and zara-zara represent the sounds the paper "makes". On the cover of the notebooks you will also see three lines, the top a straight line, the middle a gentle flow, and the lower a zigzag: they visually represent the paper types.