>>279794213
>outside of the anime via the himitsu's and info available on the Arcade that would further develop their relationship every update
Oh damn, is there an archive of those somewhere? It's fine if it's in Japanese.
The show did have some stuff like Tsumugi being taught lame poses by Chii but you're right, they didn't show much of it on-screen.
Doesn't really matter because this shit was diabetes-inducingly cute, I was convinced.