Yamamoto Writing Pad A5 - Tomoegawa Tomoe River

I got my order today of the Yamamoto A5 writing pad and the Opus 88 Koloro with the medium nib. This paper is thin like the blue airmail paper I used to use years ago so I was convinced there would be bleed through, especially with dark fountain pen ink. I tested it out with Octopus Sea Serpent and this paper met the challenge. No bleed through, no feathering, and it showed the sheen of the ink perfectly.