|Romaji||Ōru Ōru Aporojīzu: Hinichijō-hen|
|Air date||August 29, 2013|
Following an investigation in the chemistry lab, the class trial begins, where Toko Fukawa reveals that she, Byakuya Togami, and Yasuhiro Hagakure received notes from Sakura Ogami calling them to the rec room, where she had witnessed Hiro attack Sakura with a bottle out of fear. However, Hiro being the culprit is ruled out when Makoto Naegi reveals Sakura had in fact been hit twice.
This second hit is revealed to have come from Toko after she had passed out from seeing Sakura's bloody forehead and became Genocide Jack, hitting her with another bottle. However, she is proven innocent as the place she attacked Sakura was different from where her body was found, with Byakuya revealing that the cause of her death was actually poison, showing a bottle of poison that mysteriously contains protein shake.
Aoi Asahina announces that she is the culprit, stating that she had replaced Sakura's protein shake with poison and gave it to her. However, Makoto and Kyoko Kirigiri's analysis of the 'closed room' scenario, as well a piece of glass found in the poison bottle Byakuya presented, reveal that Hina was in fact hiding the fact that Sakura had actually committed suicide.
As the trial comes to an end, Hina reveals she had purposely tried to steer the trial to a wrong verdict, believing that Sakura was suffering and felt everyone deserved to die to make up for it. However, Monokuma reveals that the note is a fake he made, with Sakura's real suicide note stating her wish for everyone to make it out of the academy alive. To add insult to injury, Monokuma reveals that he had caught Alter Ego trying to hack into the school network, and executed him by destroying his laptop with a bulldozer. Later that night, Kyoko has Makoto distract Monokuma whilst she learns about the academy's sixteenth student: Mukuro Ikusaba, the Ultimate Despair.