I get the feeling they may have already gone insane and what we have been witnessing is their delusions, hence that weird rant that the phone got. I can't wait til this is animated!
Reading this chapter and then going back to re-read chapter 4 opens up your eyes. It kinda makes sense that the twist was foreshadowed/teased since then. I wonder if she really did kill her father though.
For those people saying the yuri is barely present, yes it seems that way right now but just you wait until chapter 11 and onwards. Thats when things pick up. The current Spanish translation is at Chapter 15 so it'll probably be a good wait til then though.
I like reading the differences between the Spanish translation and the English translation and I learned today that Yuzu has an accent, something the Spanish translation doesn't portray. I found it eye opening but I like both versions though. Thanks for the chapter!