Shoutarou seemed like he was also able to build himself back up (at least financially), he was at least fairly well dressed in what looked like an expensive date at a fancy restaurant with Tomoko. I have doubts over if he managed to grow as a character. Maybe he did at least grow a little, Tomoko needed help and he gave it to her, so I guess that's at least a point in his favor. He used to run from all of his problems, but he made a choice this time: of the three women in his life who played significant roles in it he chose his ex-wife. Sucks for him that his renewed pursuit of his feelings for her did not bear fruit in the end.
Mixed feelings about how he helped her get herself back up, but in the end they stayed as friendly ex-spouses. I guess this was just the natural conclusion to their failing romance from way back before Kokoa was born. After all, they basically had her just to buy time for a relationship that was not really working out. Maybe it was just a sweet fling that should not have lasted that long. In the end the two of them were just not a good match and maybe just not cut out for family life or parenthood.
I'd have liked to see him send some child support for his second child, but no such thing happened here. Nothing will change the fact that she's his daughter, and I'd have taken it as a sign of character growth for him to be able to take a little bit of responsibility for her life. He didn't need to marry Shiina and it's good that didn't happen, so the cycle of unhappiness from relationships that shouldn't exist wouldn't start over.
