I like the style! The art, fonts and menus all form a strongly unified aesthetic theme.
I found the popping text sounds somewhat distracting. The music was very fitting, but the track that starts playing when the phone appears is much louder than the previous one.
The narrative is linear in nature, so the multi-layered choices set some wrong expectations for players. Either removing choice or adding stronger narrative acknowledgement of decisions would help unify them with the storytelling. It was neat to see part of the story being told using the phone. The narrative hook felt a bit weak to me, but just watching the cute characters interact was pleasant!