This show is weird. During the first few episodes it was as if Giftias (Isla) suffered a slight gradual decline for a few years before they finally need retrieval. At that point I thought this show would be about living with dementia. I had quite high hope for that at that stage.
The whole overwork thing is strange since Giftias get mechanically maintained and aren't mentally able to forget things. You'd think 3 years of haitus would be enough to set her back. Anyway, by episode 10 it was clear that Isla gradually gets better symptomatically and we're mostly in it for a few things:
1) Isla's cuteness
2) romantic tension between the main leads
3) drama about making vs not making memories given a limited lifespan
The artwork lacks contrast. Colours are pale, despite being bright overall.
I'm not sure if we had time, but a lot of the side characters seem wasted. We could have explored many more different retrieval/Giftia dynamics by checking out other personalities. Eru's comedy relief is welcome, but Minako (that's the tsundere girl right?) was really overbearing at times. It wasn't always fun to watch.
In the end, I feel like the author changed directions partway through and missed a big opportunity to take the declining, demented family member pathway. It could have been novel.