Well, that wraps everything up. I definitely expected another singularity to show up randomly to take Aoba back to his world. I wasn’t expecting them to introduce so many Coupling mechanics, though. It seems so wasted. The revelation that Hina was actually from Aoba’s world is definitely interesting. It finally answers the question of what started her loop in the first place…glad that was cleared up.
I don’t even want to attempt to analyze the whole “moving one nanosecond into the past to compensate for not moving thoughts” thing that they pulled in the final part. The ending is definitely interesting, though. It leaves a bit up to interpretation by wiping Aoba and Hina’s memories of their time travel. It may very well suggest that the loop just starts all over again in the end, despite all that happens.