DOCOMO introduced a multistreaming capability for its "Hikari TV for docomo" service, making it possible to watch up to 7 programs simultaneously on a compatible Docomo 5G smartphone and app.
The multi-multistreaming is available from Docomo's catalog of 18 channels.
https://www.nttdocomo.co.jp/info/news_release/2020/06/01_00.html
