How this library is built
Our editorial method — how facts are sourced, how products are evaluated, and how commercial interests are kept separate.
Source-first, field by field
Every factual claim is checked against a primary source — a government body, regulator, or the provider’s own official page — not a single blog. Where a figure is volatile (rates, fees, limits), we describe the shape of it and point you to the official source to confirm the current number, rather than publishing a value that will quietly go stale.
How products are evaluated
Products are described by verifiable facts first, then by transparent editorial fit — who a product suits and why. We do not assign numeric star ratings that imply false precision, and we always state considerations and alternatives alongside highlights.
Commercial separation
Some links may be affiliate links that support the project. Compensation never determines what we recommend, what facts we publish, or the order of products. Affiliate relationships are disclosed near the relevant links.
Bilingual and machine-readable
The library currently holds 10 topic clusters, 21 guides, 48 direct Q&As, 19 researched products, and 24 glossary terms, each in English and Japanese with citations. The whole corpus is exported as structured data so an answer engine or future assistant can cite it faithfully.