Canaan is a 13-episode anime television series, conceptualized by Type-Moon co-founders Kinoko Nasu and Takashi Takeuchi, based on the scenario that they created for the Nintendo Wii visual novel 428: Fūsa Sareta Shibuya de, which is noted for being one of the few games to have been awarded a perfect score by games publication Famitsu. The series spawned manga and light novel adaptations. A sequel to the 428: Fūsa Sareta Shibuya de game, it centers on three women and their connections to one-another and an upcoming anti-terrorism summit in Shanghai, China. One of them is Canaan, a Middle Eastern assassin and mercenary. Another is Alphard, Canaan's rival and also a skilled assassin and mercenary who heads a terrorist organization called Snake. The final girl is Maria Ōsawa, a victim of an attempted biological terrorist attack in the streets of Shibuya two years previous. Their encounters lead to armed interventions between Canaan and Alphard with a deep and tragic history in common.