Okay, I hit the lock on Gouto's route in 13 Sentinels! As expected, this one starts dropping plot bombs all over the place. Chibi-hiro actually contains the memories of the "real" Morimura instead of her clone, and for some reason, she didn't want this world to survive, which I don't get because isn't this entire project her idea? We also learn that Okino is her son via IVF. Gouto is also in love with clone Morimura, and we learn that Ida lied about Izumi killing everyone after the Sentinel infection. It's starting to feel like Ida is the real big bad here rather than 426/Izumi.
Looks like I've got to get halfway through the third area to continue with Gouto's story.