Hila ;)'s Manga

I somewhat understand why people rate this so high, but on the other hand it's unfathomable to think that this have above a 9. And it's a 9.6??? I 100% don't have the best taste but a 9.6 is literally almost insulting to me. There's no character at all, and everyone's defining personality trait is limited to only one thing, the chemistry is dry as hell and I'd argue there's none at all. Why did anyone like the main guy? He's just so devoid of anything remotely interesting, all the character is sacrificed for the narrative but to make an impactful story like this you need that. I understand the reason why the main guy was so mellow was because of him accepting his death and wanting the last portion of his life to be somewhat enjoyable, but that fact doesn't make it any more engaging to watch him be indifferent and not react to everything. Why should I care about his life when he doesn't care about his own? I really found this insufferable to get though but admittedly it's also in part because stories like this aren't my thing.