Soundless Voice / Proof of Life / Endless Wedge

Proof of Life
Sung by Rin and Len

Music and lyrics written by Hitoshizuku-P Rin knows that she is dying but she wishes to keep singing as she wants something to remain as proof that she existed. She expresse her pain and lonliness around her and of how the one thing to not disapper is Len's smile. Rin continues to exclaim that she and Len are connected and that she will always be with him. She is also aware that Len is in love with her and it is implied that she loved him back as she wanted to thank him for everything.
 * Nico broadcast
 * Youtube broadcast (with subtitles)

Soundless Voice
Sung by Len

Music and lyrics written by Hitoshizuku-P This is the reply song of Proof of Life. Len sings of how he can not live without Rin and that they are suppose to be sharing the same soul. He wants to know if she is lonely or in pain so that he can comfort her as he is aware that she is withering away from him. Len states that he was in love with Rin but could never say it and wishes for his voice to be taken away and to give it to the one he loves. In the end he wishes to die with her as his voice is now soundless without her.
 * Nico broadcast
 * Youtube broadcast (with subtitles)