People who read Guardian Dog

D1ateatingthatpusspuss

Ok

Moonlighttears

22
Gengo Kurosaka leads a normal life until a run-away alien called "Six-eyes" decides to take refuge in his body. From then on, Gengo becomes Ishtar's target, a beautiful alien in charge of making sure the aliens don't turn planet Earth into hunting grounds. Gengo has now to learn to coexist with his parasite to stay alive...

SilverFox

If only it was longer!!