Rin and Luka are the best duo ever. It blows my mind that barely anybody has used them together. This is one of my পছন্দ Reol VOCALOID song as well as my পছন্দ duet ever দ্বারা them.
This is one of my পছন্দ DECO*27 songs and is in addition one of my পছন্দ Gumi songs. As typical of DECO*27, the tuning needs some work, but the meaning of the song and the great video make up for that.
I totally forgot this was even DECO*27. It is one of my পছন্দ দ্বারা them and also one of my পছন্দ Hatsune Miku songs. It's really deep, and even the art reflects that.