One Punch Man sold 13,289 copies in week 1 (the week ending in April 30th, 2017), all of which were BD/DVD combos. It’s not a surprising figure, given the high level of popularity the series enjoys in the US. Source here, photo evidence after the jump.
Digimon tri’s release week data will be coming out soon. I’m waiting with baited breath, hoping for an appearance in the top 20. It’s going to be close, and depend heavily on thresholds.
Oricon manga reports tend to fall well, well short of the “actual” values reported by publishers. I’ve written before about one of the most extreme cases (Yuruyuri’s one million copies with 0 weeks in the charts), but there are plenty of others out there. This isn’t a comprehensive look at it (and these series may or may not represent “average” cases of underreporting); it’s just me picking a couple confirmations and counting up the total (i.e. total on weekly charts from last week a volume appeared) Oricon reported sales up to the point when the publisher reported a given number.
Some of these may simply be unsold copies, another part may represent copies sold at a 10k/week rate in the long-tail shadow of the charts, and a few may come from the overseas sales Oricon chooses not to count. How to separate those three is anybody’s guess. I’m not trying to do that, just give some idea of how big these gaps can be.
I thought it’d be a fun little exercise to try and pull out as many mangaka names as I could without relying on references. This is that list, written on lockdown mode and complete with the reasons why I remember them.