天蓋 (Tengai) is an original maimai composition by the artist 花徒めと (Metomate), introduced during the PRiSM era on October 25, 2024. The song serves as a challenge track within Heavenly Realm Area 8 (天界ちほー8), positioned between the similarly mythologically themed Ourania and Deicide in the area progression. What distinguishes 天蓋 from many maimai originals is the unusually elaborate flavor text that accompanies it, a self-contained narrative reading like a dark fairy tale. The story follows two schoolgirls, Alma and Rag, who venture into a forbidden forest after hearing a strange, sweet voice. Rag's sickly younger sister secretly follows them, and a demonic entity, described as a voice too sweet and terrifying for the closed-off town, calls out to her as an "angel," craving her life force. The two older girls escape, but Rag's sister is found that night transformed beyond recognition. The title 天蓋 ("canopy" or "heavenly canopy") refers to the story's climax: Rag crouched under the forest canopy clutching her sister's shoes, her tears silent. Her companion Alma never sees Rag cry again. Musically, the track drives forward at 178 BPM with an energetic yet melancholic tone. The Master chart, designed by あまくちジンジャー at a 13.9 difficulty constant, sits at the ceiling of the 13+ tier and features 733 notes with prominent Slide and Touch patterns (66 and 71 respectively). The Expert chart was designed by みぞれヤナギ.