I just watched 'Black Mirror' episode 4 of season 3 (11 episode of whole) titled 'San Junipero'
Lots of concepts were similar to the last quarter of 'Sword Art Online' anime 'Mother Rosario'
- Using virtual reality for therapy or rehabilitation purposes.
- Spending huge part of one's own life in VR due to health issues.
- Homosexual relationship among protagonists in Black Mirror which resulted in marriage compared to a joke said by Yuuki to Asuna about inability to get married with her because she would change her name into Yuuki Yuuki (Asuna's surname)
My question is: Is it possible that these productions were somehow influenced by one another? Or is it common trope in SciFi or simple coincidence?