Kokeniwa · Japanese fandom, explained
Fan goods, fewer guesswork purchases.
Measure your ita bag, find a cover that fits, and understand what a Japanese goods listing actually promises.
Try the badge-count calculator →Ita bags
Ita bag inserts: measure your bag before choosing a sheet
Choose an ita bag insert by usable width, height, opening and badge size. Compare published COADE sheet dimensions and avoid the A4/A3 fit trap.
Open guide →Ita bagsIta bag sizes & badge count calculator
Estimate how many round badges fit in an ita bag with a non-overlapping grid calculator. Compare 57 mm and 75 mm layouts using your usable dimensions.
Open guide →Protecting goods
Japanese can badge sizes: choosing covers that fit
Read Japanese can badge and protector sizes. Understand 57 mm, nominal diameter, cover compatibility and why covered badges need fresh measurements.
Open guide →Protecting goodsCheki photo sizes: instax mini, bromides & sleeves
Compare instax mini outer dimensions with the image area and L-size prints. Measure fan photos and choose sleeves using usable internal dimensions.
Open guide →Choosing goods
Buying goods
Japanese blind merch: random, BOX and complete-set labels
Understand random Japanese merchandise listings. Learn why buying one of each is different from buying the same number of random packs, with an official example.
Open guide →Buying goodsJapanese preorder labels: reservation, made-to-order & stock
Read Japanese fan-goods order labels: yoyaku, juchū seisan, toriyose, stock and bonuses. Use a checklist for dates, selection and seller-specific terms.
Open guide →