Thought he'd be getting his name wrong as a gimmick up until the end of the series, but I guess that moment also works.
I wonder how much Youta/rou/suke would die inside if he knew Izumi was listening in on the other side of the door.
And, I wonder if Izumi's just gonna be a consistent shade of cherry tomato around Youta from here on out.
The classic scene of a person hearing genuine praise by accident, from someone they like/admire. Those are almost always good scenes, even if it's a bit of a cliche.
So he is more or less completely over the concerns he has about the title i guess. Not that he was too hang up on it in the first place but 20 chapters is pretty fast.