A story about a small town and a strange friendship between two girls

In the dismal world where humans live together with hybrids everything
becomes more distorted day by day. Yvas is a teenager who happens
to work as an assassin for an agency established by the government.
However, after an incident between them and his friend, Yvas and his
partner Alissa swear to destroy the agency and become free from it.

Everything becomes even more complicated when Yvas dies and
comes back to life with a strange power called "awakening". Due to
circumstances Yvas becomes a target of multiple underground groups.