I did read the original source and I think it was a medicore manga.
But this show fixed most flaws in the manga, reduced the story to the essential but did miss out on Hiros development so the ending feels rushed.

The jerk-off scene stired some controversy but I think it should show Hiros docile character, running like a machine without an option to decide what he wants.

I wished they had at least one episode more to go deeper into Hiros character. I don't think the office scenes were too long, they are essential to understand his struggle but how he did come to the conclusion to change his workplace was too fast, when Hiro has lived in a "treadmill" for five years. Also some flashbacks to Kais family live with his father would have helped the show.

It's always a problem with such short shows to go deeper when all you have are six episodes. I don't quite understand why they have to limit themselves. Two episodes more shouldn't do that much for the budget but could make the show better.

Some are impressed by the opening sequence which I don't like. Why? Because most japanese series show the happy end and they waste 1:19 of only 24mins runtime.

Regardless of the flaws it was a good show with high production value with some fluffy scenes and an adorable couple. MDL is missing a voting for cinematography and design which are also integral for a good series, so my endscore is higher than "calculated" :)