have you ever seen the shin megami tensei ova? really the whole series has a lot of demons and dark gods being summoned through dated computers (although at the time they were modern). I'm sorry if this is the thirtieth ask you've gotten about it! from bishoujo-world-order
I haven’t seen it, but I’m familiar with the concept of the old Shin Megami games. I played S. M. Tensei Nocturne on ps2 recently and was so pretty disappointed about the lack of computer stuff. Good call, though.