Finally there's a license, regarding why denpa put it off until next summer it's probably something to do with the anime returning in '22 and that denpa wanted to coincide with the season 3 release with the english volumes. Or that Hakusensha put down a tentative release date when they were hashing out licensing deals, or that denpa will grow (in terms of business and translators) in '22 and wanted to put out this title until such time comes. Its also saddening that its single volume instead of a 2-in-1 omnibus as there's currently 15 volumes, 16 coming later this year and possibly 17 by the time summer '22 rolls around.