Meikyuu no Seria (alternatively, "Amudogaru Senki: Meikyuu no Seria Rei" on Nijiyome) ended service on April 26, 2019 (DMM ver.) and on May 24, 2019 (Nijiyome ver.). As their H-scenes were largely the same (with the Nijiyome ver. having one more scene's worth, being an "upgraded" form of the original DMM version), I took the liberty of listing this gallery under both names.

Title page (taken from twitter): 1
HCG: 2-175
Character stands: 176-295

Character alternate expressions, when detached, weren't pasted over their base because I wasn't sure what the exact transformations necessary were.

MEGA stash (Meikyuu no Seria): https://mega.nz/#F!62IBnKIJ!YPpeK_9IVmhRcIVWFwd9ig
MEGA stash (Amudogaru Senki, has everything the previous does): https://mega.nz/#F!2rBx1IKD!PhH2GFJlP22LxuaJsmvGTA

I'm reasonably sure I got all the available HCGs, since they had a predictable naming pattern (that said, if you look in the MEGA's out#/hero_ui/ folder you can tell that they already had some HCGs created beforehand that they didn't publish before the game went down). I'm a little less certain on whether I got all the character standing art though, and I'm almost guaranteed to have missed a few of the background art. With the way they organized it I pretty much had to guess some file names to grab them. It would've been a lot easier if I knew how the .utage script files were supposed to be decoded...

Good that this one got uploaded here before the game ended. Never heard of this one tbh

Base +7