As an R18+ OVA, "Elf ni Inmon o Tsukeru Hon The Animation" is not available on mainstream streaming services like Crunchyroll or Funimation. The episodes are distributed by Showten for purchase on adult anime platforms in Japan, such as DMM.
I'll choose a reasonable assumption and provide a complete guide for "The Animation 1 (2021)" of a likely candidate: "Elf-san wa Yaserarenai" is a 2020–21 manga adaptation (if you meant an "elf" anime). If that's wrong, reply with the correct Japanese title or paste the original text and I will redo the guide. elf ni inmon o tsukeru hon the animation 1 2021
High-quality voice performances helped ground the intense emotional shifts experienced by the characters. Conclusion As an R18+ OVA, "Elf ni Inmon o