Tsuujou Kougeki ga Zentai Kougeki de Ni-kai Kougeki no Okaasan wa Suki desu ka? OVA

The 13th episode, which was not aired, features Shirase taking the group to a beach as a reward for their efforts. During their time there, basking in the good weather and clear ocean, an incident occurs that results in Masato losing his memories, including those related to Mamako.

Traduzione in corso — testo originale in inglese.