After some interesting events that leveled up the characters' strength (which is the whole point of the goldfish metaphor), the characters fell back into draft mode. I felt the ending was disappointing since it kind of brought the story and the characters back to square one. Maybe this is what the screenwriter was trying to portray -how patterns are hard to break- but the characters just didn't show how much they'd grown by the end of the story. I also think it's too open-ended for my taste. I recommend it only if you have extra time/are a fan of Iwata Takanori :)