Odc. 1: Satou rozpoczyna swój drugi fali zamachów, mający na celu piętnastu spiskowców przeciw Ajin.

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Sokabe informs Yuu Tosaki that he must resign his position because of his failure to stop Satou and for allowing Kei and Kou to escape. Satou announces his 'Second Wave' action to assassinate 15 people he believes are involved in the conspiracy against Ajin, subject to 2 conditions which include the government admitting to experiments on Ajin. Meanwhile Kei discusses options to trap Satou with Kou and he decides they need a powerful ally, Yuu Tosaki. They drive in a stolen car to the hospital where Yuu Tosaki's comatose girlfriend lies to force him to meet them. Yuu Tosaki confronts Kei who proposes that they work together to stop Satou and Tosaki reluctantly agrees. When Satou realizes that the government will not meet his demands, he makes another public announcement to start his 'Second Wave' action and kills a young surgeon who is one of the 15 people on his list. (Source: Wikipedia)