When the Miwa Unit finds a large energy drone, they are confused because it has already been destroyed; Yuma reveals to Osamu where he came from.

When Trion soldiers enter through an irregular gate that opens at Osamu's school, he charges recklessly towards the Marmot to protect his peers.

Osamu takes credit for defeating the Marmod to cover for Yuma. However, he is called out for unauthorised use a Trigger.

Yuichi and Osamu investigate the cause of the abnormal portals; Yuma follows the advice of his guardian Replica and does his own researching.