In a city divided by class and a massive wall, trainee ninja Kamari befriends Rappa, a free-spirited boy from Lower Town. As buried truths and corruption surface, the two children challenge the system that governs their world. (Source: Annecy Festival Global Anime Challenge - Original IP Projects) Note: From a report via Anime News Network, this anime was initially announced by the studio Kinema Citrus and revealed at Anime Central 2024's "Kinema Citrus Sweet 16: My Happy Marriage and What's New" panel.