GoE 49 Silver Cube

GoE 49

...

Elle almost jumped backward in shock at the strange sound from inside the Silver Cube. Elle shouldn't have been surprised by the unfriendly welcome that voice had said earlier. However, Elle didn't expect the Silver Cube to react so quickly.

 "Its name is the Silver Cube. Two people are living in this place. It's just that I can't see the shape of the two creatures. Either they are humans or aliens." whispered Etter and then disappeared.

 "Hah!" Elle complained as if she was used to Etter's actions that always disappeared at the most important moment.

 "We are not aliens. We're not humans either." shouted a voice from inside the cube.

 Elle was silent. Since when have they been able to hear the conversation between Elle and Etter? Or maybe they had known of Elle's arrival from the start?