地獄 (Jigoku, "Hell") is an original song created for maimai DX PRiSM as Episode 7 of the Kotonoha Project (言ノ葉Project) 2nd Season. Composed, arranged, and lyricized by producer 164, the track pits two contrasting vocalists—ELISA and Taro Kobayashi (小林太郎)—against a searing 190 BPM rock backdrop. Their voices trade off and overlap, mirroring the song's lyrical conflict between lingering hope and the inexorable pull of damnation. Within the maimai narrative, 地獄 anchors the tenth chapter of the BLACK ROSE area (BLACK ROSEちほー10). The in-game flavor text sets the scene at Lapelter Medical Center, an institution claiming to have cured Black Rose Disease, where a series of gruesome incidents unfolds. Investigators encounter victims with stone protrusions, cryptic mirror fragments, and a mysterious count left at each scene—details that evoke a childhood "game" set by Tristan. This dark storyline provides the atmospheric context for both the song and its unlock conditions. A VOCALOID version of the track was also released alongside the human-vocal original, and the music video was produced by ツツミヒデアキ (STUDIO KAIBAA) with illustration by しきみ.