now we back to the main track, reading all of the statements above really makes it more interesting yet thrilling (and scary)
Aizawa’s ghost for being kept in classroom (and slowly expanded), Michi having something behind her neck, Michi encounter with Aizawa in her dream, the past ghost (Michi younger self?) protected her from evil ghost, the girl that Sayaka saw during festival and the handprint she got on her right leg, Michi who got blocked for trying to interact with Aizawa, then the memory loss Michi supposed to have during the festival
i really would like to think that Michi previously had encountered Aizawa when she was still alive (and she met her during festival too), but the very first chapter feels like it was their very first encounter. perhaps both have their memory got wiped and thus that’s why Michi has that thing behind her neck, that thing might be the seal which connect both of them/to prevent both from remembering the past accident 🤔?