This was cute!!! I think you mentioned before that this was from your Quaint AU, right? So it's neat to see a sneak peek of that through this O2A2 entry!! I like how you distorted (bastardized? changed? can't think of the right word right now my bad ahhhhHHHH) the names like Q = Kyū (which i thought was clever haha)
You really got me interested in this AU though!! Sounds like Mahiro is having a rough time all around with his dad AND mom meanwhile poor Kyū is just trying his best to be nice while also kind of kicking the can down the road as to what the truth of everything is for the boy. The animations were also a suuuuuper nice touch (and it's too bad my current computer hates the downloaded version and keeps making the game flicker every time Mahiro blinks because it keeps me from seeing the animation you put in its full glory OTL. at least i can see them super well in the web version tho!!!) and I especially loved the fact you added a revert button to the ending because that felt like an especially neat touch that wasn't probably necessary to code in but kind of adds to the curiosity of the story just the same (if that makes sense haha).
Also the art!! In general!! I love??? You really have a way with drawing characters in a style that's pure ~aesthetic~ to me (im WEAK for the colors and shapes you use in your designs ngl) and i felt like you once again popped off in this short thing (I especially like how you used the one sprite, others=silhouette rule to shift all the focus to Mahiro while Kyū still being a predominant presence/the viewer's lens so to speak)
But anyways!! Good job with this it was a very enjoyable quick game to play through ^0^