Hey there! That particular mechanical pencil is unfortunately discontinued, but sometimes they become available second hand from auction sites like eBay, Mercari, or Yahoo Auctions, not sure of the other options for buying second hand items in Japan. That said, you really can't go wrong with any of the available options out there at the moment, especially with the stationery scene in Japan! The Pentel Sharp P200 series, specifically the P207 is a great 0.7mm mechanical pencil. It's light weight, inexpensive, and there are a wide variety soft ergonomic grips you can find to fit them. The blending stumps are the same no matter where you buy them. They're all just rolled paper, so any blending stumps you come across will work just fine. There's no specific lead needed, she just uses any HB hardness. Pilot Color Eno Neox Erasable Lead has a great range of color leads in .7mm! (Red and Light Blue are often used in animation for quick sketches.) Fine liners are available from a lot of companies now, but Sakura Pigma Microns are a great standard to start with. As for Alcohol Markers, Copic, OLO, and Ohuhu all seem to be available in Japan, but you might just want to check out a local art supply store to see what they have available in your budget. I recommend starting with a grey set for working with values first, either a warm or cool grey set is all she uses in this video series, no need to go all in on a huge set of markers at first. Hope this helps, looking forward to seeing your work!

Hey, Glen! Most mechanical pencils are refilled by taking the cap off the push-button used to advance the lead. Some pencils will have a small hidden eraser under the cap which can be removed to give you access to the lead tube where you can drop in lead refills, some just have access to the lead tube and no eraser. Depending on the size of lead, you'll only want to drop in 2-3 lead refills at a time so they don't become jammed. Hope this helps!

Hey @melinda883 This is a pretty widely available pencil box from any craft store, school supply, or office supply store. There's a company called Art Bin that makes clear plastic pencil cases with dividers available at most art supply stores. You could also repurpose boxes you have lying around for organizing your art supplies! Old shoe boxes, cigar boxes, or sturdy gift boxes make great pencil cases!