It's Shin Megami Tensei type story basically a post modem digital gothic horror where the internet and technology is used to summon gods and demons and open strange realms to reality, but all the monster, gods and demons are moe anthropomorphic version them. The world still fallows Shin Megami Tensei story tropes of talking to and befriend demons to your side and even taking those moe demon allies and having them brutally fusing them into new stronger demon to fight by your side. 