No one is really her friend. Literally. Like other people have said, at the end, it turns into an apocalyptic event that has "zombies" (Army Ant's (people infected by the Queen's Saliva) without a connection to their Queen) infecting others. She basically turns into the embodiment of a spider, and starts hunting the infected (I'd assume so, we're not really told what happens). But back to original statement, yes she has no friends. Tajima who you think becomes her friend, basically is the antagonist who caused her to turn into this spider like assassin, because they wanted to develop the strongest soldier? Because she was able to manipulate and control people's mind, but her powers began diluting or dissipating? So, she couldn't control their mind, So she resorted to forcing their hand into controlling them. Obviously that doesn't work then the MC survives that ordeal while the antagonist dies, the MC is saved by the "STRONGEST" beetle person? and the cockroach girl, then the cockroach girl and the MC go to safety in a vault and eventually the cockroach girl who is obsessed with the MC the whole time basically wants to rape her. I mean I guess you could count her as a friend, but she literally said she wanted her to hate her when we first see her, and now wanted to rape her so... meh. Also The MC ends up killing the Army Ant Queen who was actually pretending to be her friend, so that she could just like Tajima/the Boss control her and use her power/strength. Now quickly. Her dad was also 70% controlled by Tajima and then the mother was killed by her dad. The dad being the big brolic, broad guy in the beginning with the cape who basically is the only one who knows the "boss" aka Tajima (I forgot their title/name) The MC ends up killing the dad. So now the MC has killed 2/3 friends of hers, and the final friend wants to make her hate her and rape her. And she has killed her actual father, and the person she saw as a father figure. And had her Uncle almost rape her, and he dies in front of her. Her mother killed by her father. And now shes living in an apocalyptic event. But somehow, It doesn't seem all that sad. Might be because she doesn't really acknowledge it? Pretty disturbing though.