>>53763145Millie and Enna are "best friends" yet even Millie doesn't display this type of behavior to Enna, literally stalking her into a collab. That means the relationship between Enna and Kyo is not simply "friendship". In fact NOBODY in the entire of Nijisanji displays this type of behavior towards each other. The only other time we witnessed this was when Pomu and Luca were flirting.
Notice this type of behavior is always seen between-genders, never with the same gender. It is flirting, that's literally what it is. They are flirting on stream.