I completely forgot Isogai's name, but I remember watching the Blue Giant movie with (kinda) botched subtitles, so when he appeared I instantly went "it's Ice Cube!".
On a more serious note, I love Day's drive for improvement, but there's also a part of me that connects to it in a bad way. Every accomplishment is merely something to better oneself, and after it you simply move forward. I tend to feel the same, but it has taken a negative form in that I fail to feel accomplished from my accomplishments. I simply move on to what I need to do next, I don't get to enjoy my successes. I wonder if Dai will ever experience something like (if so, it'd definitely be in the next part and not at the tail end here).