First anime binge - first thoughts (spoilers)

[addictionfriction]

As title suggest, this is my first time watching a complete season of any anime (I probably watched some season of Pokemon, but let's not count that).
Anyways, I was impressed. The story was deep and hits you right in the feels. The setup/backstory could be a little silly/cartoonish; but it does help glue some pieces of the story together.
That being said, with all the shifting parts, I felt like some parts of the story felt unresolved
I'm guessing one of the women in the end dinner scene was supposed to be Misoto?
And why did Yashiro just stop killing if Satoru was in a coma?
Also, I'm confused why Yashiro would have killed Satoru's mother in the original timeline, because Satoru was no longer a child, nor did Yashiro have any knowledge that Satoru was onto him. He literally has zero motivation to kill him at that point.
I was also curious how they were going to resolve the Aire Katagiri story; but it just seems like they meet in the tunnel rather than at work; but that also sort of just negates any sort of interaction they had with each other.wait...is that why they call it "erased?" is it because by changing the past, nobody remembers the previous future? ok now I'm going off on a tangent.