リングの熾天使 (Ring no Seraph)

Seraphim On The Ring is a song sung by Miku Hatsune and Rin Kagamine with Kaito Fuga doing the chorus. It is the one-hundred-and-thirty-fifth track, the one-hundred-and-thirty-sixth track, and the one-hundred-and-thirty-seventh track in Other Vocaloid Songs 121.