I assume these are updated numbers? Do they include overseas purchases? It did seem to get a boost from English fans going by what the author said on twitter, plus the English license announcement. If it's still doing badly then that sucks.Physical Sales
According to Shoseki top 500, Kimi no Tame no Curtain Call vol 1 has sold less than 1,500 copies / 0 day ranked on Shoseki
Vol 2 has sold less than 1,450 copies / 0 day ranked
Hopefully with the current hiatus the author is on, more people start buying the volumes.