The claim specifies a date (April 26, 2026) and precise deployment numbers (1,400 firefighters, 100 SDF personnel) for an event in northern Japan. The provided evidence contains general reports of wildfires in northern Japan involving 'more than 1,000 firefighters' [web_search], but none of the sources corroborate the specific date, the exact numbers (1,400 and 100), or the continuation of the fires for a fifth straight day on that specific date. The evidence is insufficient to corroborate the specific details of the claim.

The claim specifies a precise date (April 26, 2026) and quantitative data (1,373 hectares, 7% increase). The evidence provides general information about fire damage in other locations (e.g., 3,000 hectares in Pacific Palisades [web_search], over 600 hectares in another instance [web_search]), but no source corroborates the specific figures (1,373 hectares, 7% increase) for the date April 26, 2026.