Warning: Smut, smut and more smut (σˋ▽ˊ)σ

It's been two years since the barrier was shattered... All was well until humanity's opinion and voices ruined it all. The war had begun. --------------- Although one girl had always seen the world as a sickening place... A majority of humanity was indeed contaminated, but she was one of the individuals who deserved the mercy of the monsters. From being abused and previously bullied (Y/N) had enough. She escaped her own home, only to be exposed into the havoc of the world. It made her sick. Highest rank: #16 in Fanfiction

He loves his senpai but she doesn't seem to notice him! She loves her kouhai but she has too much of a poker face to show it! Will Len's senpai finally notice him? Will Len finally notice her? It's all in the story!