Arthur-Harusune
Mystery- Andrea
Mystery's true form- Feral DJ Werephantom
Vivi-Akisune
Lewis-Mizuri
Arthur's dad-Shipwreck Jones
Shiromori-Shirusune

Instead of Akisune being amazed in the video,she's glaring. The flashback of Shirusune when he saw Aki is when Aki,alived,protecting alived vers.Mizuri and Instead of Shirusune being shocked at seeing the flashback,he smirked. The other students of Aki are tied up by Shirusune's vines