How sweet. They understand each other so well they can communicate telepathically.
The writing is reaching new lows, going out its way to depict Ayano and Ushika as melancholy dark-haired women tropes while the first at least clearly wasn't at all like that when this manga started. And as if to announce his intention to stay low, the writer is introducing the second fanservice trope-character since Kaoruko. He could have easily have introduced a loud cheerful dark-haired super talented character who has all the advantages Ayano supposedly lacks, but he had to make her blonde because writers suffer from withdrawal when they can't stick to their boring old tropes. That girl needs to get some very heavy obstacles pushed onto her in the next chapters.