That's exactly what I was thinking!The author went for it huh. That's a pretty good way to transition into a much more tumultuous part of the story. I'm guessing this is the part of the story where those interviews in the earlier parts of the series came from.
Then of course Arima will know this is the work of him and feeling guilty about it 😮💨WHAT THE FUCK AQUA WHY WOULD YOU DO THAT
Nah bro, the murderer killed himself but maybe he's luring their fatheris he trying to possibly lure out the murderer who will now go for Ai's kids?