Terra Formars: Revenge OVA

This adaptation covers the Earth arc as presented in volumes 21 and 22 of the manga, focusing on the events that take place on Earth. It follows the characters as they deal with the consequences of the Martian creatures' presence and the efforts to combat them. The story includes key moments from the source material, such as the strategies employed by the human forces and the escalating conflict with the Terra Formars. The OVA provides a visual interpretation of the manga's plot points, maintaining the sequence and tone of the original. It does not introduce new content but rather translates the existing narrative into an animated format.