Folia ー鉄鎖の飛翔ー (Folia ーTessa no Hishouー) is Janbo-P's twentieth song and second work with Tone Rion. The song's lyrics imply that the singer is mourning being abandoned by her lover. She sings about her fear of the world's destruction, and wishes to break free of her chains to prevent its demise. The song takes its name in part from folia, one of the oldest recorded European types of Composition ever recorded. The song is a sequel to Janbo-P's previous work, 白銀航空師団の最期 (The Fall of the Silver Squadron).