Reddit reviews Kokuyo Campus Notebook Semi B5("9.8×"7)- 6 mm - 35 Lines X 30 Sheets - Pack of 10 (Japan Import)
We found 3 Reddit comments about Kokuyo Campus Notebook Semi B5("9.8×"7)- 6 mm - 35 Lines X 30 Sheets - Pack of 10 (Japan Import). Here are the top ones, ranked by their Reddit score.
Contains 10 Semi B5("9.8×"7)- 6 mm notebooks (wireless binding)It has 30 sheets per notebook, and each sheet consists of 35 linesContains a space to write titles and namesIt incorporates fabric laminated with special film, which makes the quality of the paper strongEco-friendly, FSC-certified paper
They're not standards-sized nor perforated (if that's what you're also looking for), but I like Kokuyo Campus notebooks. They're pretty inexpensive for a pack of 10 with lined-dot paper – that is lined papers where you can also see dots for dot-grid writing.
I also found them fountain pen-friendly, but I never used any nib sizes larger than medium Pilots on them, so YMMV.
Not sure about that exact notebook, but it looks similar to the classic Campus. https://www.amazon.com/Kokuyo-Campus-Notebook-Semi-9-8%C3%97/dp/B000I41D36/ref=mp_s_a_1_4?keywords=campus+notebooks&qid=1574663073&sr=8-4
For the real life notebook it would be exactly these ones
For what's inside, well, just info about pretty much every heroes