アンバークロニクル (Amber Chronicle) is a maimai original song by doujin circle composer しーけー (CK) featuring vocalist ricono, introduced during the FESTiVAL PLUS era on June 22, 2023. The track is unusual within the maimai catalog for the sheer density of its accompanying flavor text, a multi-paragraph narrative that reads like a light-novel excerpt, weaving a sci-fi story about parallel timelines, shared consciousness, and a dangerous artifact designated C204. The story follows Kohaku, who discovers that another person's consciousness named Noah has been coexisting inside her. Together they uncover that Kohaku's childhood friend Akatsuki, in a desperate attempt to save her across an alternate timeline, caused the world to collapse. Akatsuki later created a clone, Noah, and sent her back in time. Kohaku and Noah devise a plan called "AMBER CHRONICLE" to redirect history away from the catastrophic path Akatsuki set in motion and destroy the artifact C204, the root cause of the disaster. The narrative is structured like the final act of a role-playing game, complete with boss battles and a grand finale beneath an elevated railway. Musically, the song is a high-energy original composition at 192 BPM, driven by ricono's crisp vocal delivery and CK's melodic arrangement. The video production was handled by aco and タケバヤシ. The MASTER chart, designed by カマボコ君 (Kamaboko-kun), is rated level 13.3 and features 161 Slide notes and 41 Touch notes, a notably dense configuration that emphasizes sweeping slide patterns across the DX touchscreen. The EXPERT chart was designed by 鳩ホルダー (Hato holder). Originally unlocked by reaching 30 km of total distance in the Sky Street Area 4 (スカイストリートちほー4) during FESTiVAL PLUS, the song became available by default starting from BUDDiES PLUS. It later crossed over to SEGA's other rhythm game オンゲキ bright MEMORY on August 8, 2024, with charts designed by みそかつ侍 and メロンポップ.