After 5 episodes, it's still hard to really come up with any solid remarks, simple because anything we know so far that we think is useless, could come up later being super important.
This is one of those shows that have me super engrossed just because of all the things it throws at me.
I frequent places like MAL or Reddit, and even try to go on 2ch, which is Japanese only, to get clues or read what other people are saying. MAL has this awesome user by the name of Yuu_vi_Britannia who would translate stuff over from 2ch and share. Too bad everyone else is too busy complaining to read.
For example, this is a manga shot he posted recently, showing a scene that wasn't in the anime:
Spoiler!
To me, the pacing in the show is kind of sloppy, but not as bad as everyone else is saying.
And the pizza sauce, which was thought to be a gag, is an important part of the story, like many people are thinking. If the anime continues to do this, then I think the show will be one of the largest users of Chekhov's Gun I've seen in years.