Heion Sedai no idaten-tachi' Anime Detailed With New Promo

Heion Sedai no Idaten-tachi Folder Icon 001 by LaylaChan1993 on DeviantArt

I know that this is a promotional art, but what animated work is this in respect of? Was there an OVA where Kenshin fights Enishi? This looks so similar to the Trust

Qoo News] “Heion Sedai no Idaten-tachi” Anime Reveals New PV, Cast and July 22 Premiere

Heion Sedai no Idaten-tachi (The Idaten Deities Know Only Peace)

Koga Aoi of “Remake Our Life!” will appear as well! Check out the summer anime, such as “Uramichi Onii-san” and “Kobayashi-san Chi no Maid Dragon S” on “Tudukimi”

The Idaten Deities Know Only Peace (Heion Sedai no Idaten-tachi) OP English Cover

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Heion Sedai no Idaten-tachi Anime Series Releases New PV – OTAQUEST

Heion Sedai no Idaten-tachi – 06 – Random Curiosity

Heion Sedai No Idaten-Tachi Manga Chapter 39