Terra Formars: Bugs-2 2599(テラフォーマーズ　バグズ２号編)

In the late 26th century, overpopulation on Earth is reaching the breaking point, and humanity must find new frontiers. The terraforming of Mars has taken centuries but is now complete. The colonization of Mars by humanity is an epoch-making event, but an unintended side effect of the terraforming process unleashes a horror no one could ever have imagined... Notes: * Source: Viz * The two OVA volumes bundled with the 10th and 11th compiled volumes of the manga, respectively. * Based on the manga written by Sasuga Yuu and illustrated by Tachibana Ken'ichi, serialised in Weekly Young Jump.