Punishing Gray Raven: Engraved in the Heart (Doujinshi) summary: Two worlds, each fighting a war against a deadly virus. And a chance meeting between two lone inhabitants, one of each world, both bearing the scars of their struggling civilizations. The captivating musician Selena, a famous opera singer who became a soldier due to her desire to experience and preserve relics of the old world. But it\'s been more than a year since Selena went MIA, as she was captured by enemy forces and subjected to experiments with the virus. However, she has since escaped captivity- at the cost of her memories. Her appearance having changed due to the virus, she now wanders the broken lands, searching for purpose. Meanwhile, a recent college graduate ends up jobless due to the 2019 Covid Pandemic and isolated from society. But soon after, they inadvertently find themselves phasing out of their reality and shifting into another earth far different than their own- a world identical to a game they own, and the very world Selena lives in. Inevitably, the two cross paths. This is the beginning of their story.