LogFAQs > #923440824

There's nothing more to do here.
Which means I have finished episode 4, and thus the entire Question Arc!
The playtime is.... 180 hours. I had left it running when updating this topic or doing other things at home, so it's more like 120 hours. This is easily the longest VN I've played and I'm only halfway through! For comparison, my next longest VN was CLANNAD at 101 hours, and that was the whole game.