Moe is the neotenous anime style that has become ubiquitous since the 2000s. Back in the day some anime actually had more than three ages. 
The funniest thing about that is that character is actually 40 IIRC, she's lying even when she's reluctantly admitting the "truth."
I think it's in the ending montage, IIRC her scene is a few seconds of like "41st birthday stream" or something like that, indicating her character growth was just continuing to be more open and less obsessed with trying to be like a teen idol/influencer.
Edit: I found the scene, and it's actually her announcing that she just turned 42, and that's taking place within a year of the "admission" that she was 31.
Show
It's become so derivative and tropic, it's hard for me to believe anyone likes this drivel but apparently a lot of people just want a nonstop deluge of moe garbage, pantyshots, and isekai power fantasies and they cannot get enough. For an industry thats already about grinding their workers down to dust it sure is sad to see them also choosing to just play it completely safe
so now moe characters are in their 30s?
gonna be frank, i'm more interested.
the only good moe
embrace moe
