We had fanservice for the degens. We had fanservice for the history nerds. We had fanservice for the fighting enthusiasts.
Now, we got fanservice for the lore enjoyers. This series is peak, it has everything!
Also, kinda funny that the time loop/parallel worlds system is almost identical to Steins;Gate. You can clearly see the inspiration in the "cluster" of timelines concept. I'm a time travel/loop stories avid fan and that's a concept not used often.