Translates to "The Demon's Seed" or "Seed of the Devil." This implies a plot mechanic involving corruption, growth, contracts, or parasitic elements common to fantasy-themed doujin titles.
"Kagami no Inma to Akuma no Tane" translates to "Mirror of Light and Seeds of Darkness". RJ numbers are used by DMM.com for adult visual novels. So this is likely an adult game. The link might be a direct download or purchase link from their site. kagami no inma to akuma no tane rj01264927 link
The developer lists several standout features that set this RPG apart: Translates to "The Demon's Seed" or "Seed of the Devil
If you prefer a direct URL, you can append the product code to the standard DLsite product link format: So this is likely an adult game
To safely access, download, or check the update status of the game, players should rely on official community hubs and authorized storefronts.