Phenomena XII (storyline review)

(THIS STORY CONTAINS GORE, VIOLENCE AND SEVERAL MENTIONS OF MENTAL HEALTH ISSUES, PLEASE READ AT YOUR OWN RISK / IF YOU'RE EASILY TRIGGERED BY THESE SUBJECTS, CLOSE THE STORY IMMEDIATELY)

Two twins.

One remembers the demises they went through, but the other forgot everything.

Monster hunting, unexpected romance, chaos and even more chaos! A clearly weird equation that has been a big deal to 18 year old half-vamp half-human Shannon Frill, who's immediately recruited by an old friend who's main duty is to supervise Shannon along with giving him a spot in Pacific's Paranormal department.

Sherry Frill is stuck waking up in a different place and more blood on her hands each time she regains consciousness. She remembers everything and is eager to find her twin, but she's terrified on what happens when she's not awake.

Will these two twins manage to reunite while the past tries to pull them into demise? How hard will it be when the time comes to choose who's the strongest species?