Monster Girl Survival(Yandere Harem)

Meet Mike, a normal teenager who like many others has to be sent into the hazardous frontline to fend off monsters. Simple, right? But things spiral out of control when his childhood friend seeks his help. The ominous past and the deranged future is gradually revealed. Government secrets, foreign politics, monster girls and a whole separate world. Embroiled in this chaos is our protagonist, maintaining his normal life, or at least trying to. Just how could things go so wrong?(This is not my work link to the official work in the first chapter)