Monokuma announced that there were two more victims of the murderous school life. They were Yasuhiro and Hifumi. So everyone had to investigate. However, Kiyotaka didn't recognize Hifumi and Yasuhiro's dead bodies despite seeing them (because he doesn't share his memories with Kiyondo). So Makoto spoke up.

Makoto: "Okay. So, I have to tell you my alibi, right?"

Everyone nodded in agreement (Celestia pretended not to know who the culprit was, but it was her all along), Kyoko looked at Kiyotaka and spoke.

Kyoko: "Hmm. Ishimaru, what's the last thing you remember?"

When Kiyotaka answered, she said.

Kiyotaka: "Hmm... well... the last thing I remember is Hifumi inviting me to his room! By the way, where is he? Is Yasuhiro not here either? Is he on cleaning duty? Also?"