Personally, I tend to view album cohesion as an overrated factor in evaluating albums. Even if there are no direct organic connections in the lyrics or between tracks, I believe the mood created by the songs and the overall direction of the album create value in listening to it as an album in itself.
However, even to someone like me, this album felt way too much like a collection of singles. Getting tired of MARETU's style also made it hard to listen to as a full album.
Still, it seems to get better as it moves towards the second half compared to the beginning. Rational Time is also a decent instrumental track, except for being a bit too long.