Tiger Swallowtail Become a Patron To win the war 15 years prior the beginning of the story and solve the problem of their lack of soldiers, Japan amped up their bio weapon researches not only manufactured but also distributed to all armies human-like creatures who could kill very efficiently. Japan thanks to them won the war. These creatures who until now never caused any issues are now entering adulthood and seem to exhibit odd symptoms of intense bloodthirst and one by one, authorities are getting rid of them…

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