It’s more the fact it’s happening that matters than the fact is streaming on this specific service.
— U-NEXTアニメ＠公式 (@watch_UNEXT_A) May 22, 2020
Yu-Gi-Oh! ZEXAL will be streaming on the Japanese Streaming Service U-NEXT starting May 29th at 12 PM Japan’s time. This is a first for the series, as besides a very short lived streaming period on Hulu that only got up to the early 30s and vanished, and an impromptu trailer of ZEXAL on Crunchyroll that vanished within a day due to the legal snafu between ADK and 4Kids, the Japanese version of Yu-Gi-Oh! ZEXAL has for some reason not been able to be streamed, even in Japan.
While we don’t speculate often, it may be a sign that whatever contracts concern the Japanese version ZEXAL and streaming, if there have been any, have probably been amended or updated.
We’ll keep you informed if the West gets more permanent access to the Japanese version of ZEXAL