Ao no Miburo: Serizawa Ansatsu-hen

Miburo expands after Nio's arrival, and the boy argues that recruiting new fighters is necessary if the group truly intends to protect Kyoto. Growth, however, deepens the fractures inside the organization, especially around its first commander Serizawa Kamo, a man whose strength and courage are matched by a violent temperament that threatens unity.

The conflict builds until Kondo tells a small number of members something unthinkable: Serizawa must be killed. Nio does not know the full plan but senses disaster approaching, while Hajime, Taro, and Serizawa each choose the path they believe is right. One night will determine what becomes of the group that will later be known as the Shinsengumi.