So I saw that Mafumafu uploaded a cover of this song, so without a further ado.
(I honestly have no idea how to magicfy the english title)
Ano Natsu ga Houwa suru
Kagamine Rin/ Kagamine Len
Artist: Kanzaki Iori twitter @kurogaki0311
Original Song: https://www.youtube.com/watch?v=mKaRxty1j7g
Cover by Mafumafu: https://www.youtube.com/watch?v=cKAoJG3d3Vo
“I killed someone yesterday.”
That’s what you had said.