The animal representations are cute. ^^
Art style wasn't what I was expecting from something about idols either, which is nice.
Sana's character feels different.
I get that feeling Maru's character is more different, actually... Like in the second chapter she's much more timid and kind, while in the first she feels more confident and superior. Maybe it's because they're focusing on different parts, though.
How many chapters are there of this? I'd like to see more of their interaction so hopefully there's more than only one left...