I don't think it needs to be said that this one is in a league of its own in terms of presentation. The art and visuals in particular are stunning, but all the individual elements have been very competently made, from the writing to the audio.
While the individual parts are great and the production values are through the roof, I must admit that I personally wasn't as invested in the story (that obviously still managed to strike a chord with a large audience!).
As a story about dealing with death, I thought the whole framing wasn't really the best way to explore this topic. It feels to me like the real story should have taken place before the narrative even begins: the MC's actual death and the long years leading to it and having to deal with it are left in the background (in his relationship with death Mori doesn't come off as someone who's had plenty of time to deal with his own mortality), while we focus on him dealing with a surprise second death that feels less poignant than the real thing simply because it comes to extinguish a hope for a new life that was only held for a couple of hours.
And while Memento was plenty adorable, even now I struggle to categorize whatever the relationship between the two characters was as romance, considering it was mostly based on lying, antagonism, and... belly rubs!