Gallery for the scenes of Heroic Maiden, a smartphone-only gacha game that ended service March 27, 2019. Feature page (again, suited for smartphones): http://www.dmm.com/netgame/feature/heroic.html.
Apparently this was first published as "Girls HERO" before going down in 2017 and then being republished after a renewal. Feature page: http://www.dmm.com/netgame/feature/girlshero.html
I'd been following this game since its release. Its end-of-service notice came out of nowhere, right after they were done celebrating their 0.5 year anniversary. Overall the game improved a lot from its predecessor and showed some promise, shame it went down after such a short time. Anyways, thank you for uploading the scenes. Great work.