- Acting for Two:
- Yumi Hara voices Snezhana and Levia.
- Hisako Kanemoto voices Eriri and Nephthys.
- Saran Tajima voices Qurina and Regina.
- Follow the Leader: Some primary details of the setting seem almost lifted from Arknights:
- The world of Terra in Arknights is heavily based on real-world history, whereas the world in this game is Earth After the End.
- Originium is a mysterious material in Arknights, whereas Echo Crystals are a mysterious material in this game.
- Terra is mostly populated by humanoid animals, whereas the Cases in this game are humans spliced with the DNA stored in Echo Crystals.
- This game's Work Agency and Dormitories are a simplified version of the Rhodes Island Industrial Complex base management mechanics in Arknights.
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