glxxyy's activites

I'm creating this list because i've read many incest manga's intentionally or unintentionally.so i thought of creating a list. 
True incest ( Blood related sis x bro) 
step bro x sis
step father x daughter
uncle x niece  
 twincest

So I remember reading a few chapter of this manga somewhere but I forgot its name so I don't know how to find it.

The story is set in the modern world, the main character is a guy who works as a bodyguard for a girl with pink twin-tails who keeps falling in love with serial killers and people use her to track down criminals. The ML's job is to protect her and also capture the killers.

Please help me I really need to continue reading this TT-TT Thank you in advanced