Who's the sane one here? (Reader x Deadpool

The reader works as an assassin on the Asian island Roana Pur (Which is in fact the island the anime "Black Lagoon" takes place on, but I liked the whole setting and how the name sounds, so I decided to use that name, also I'm really bad at naming lands, cities or anything similar).
Deadpool is tracking down a person, he got paid to assassinate, which brings him to the just mentioned island just beneath Singapore. The problem is he got no clue how to get along in the cities.
That's why he tries to find a pro to work with. Guess who he gets? The reader, who is a hopeless drinker with a bad temper and an even worse sense of justice, who is simply not able to use the right medication of her high dosed drugs.
She just takes any job she gets not caring about such thing as moral, which she laughs off as the chain, which keeps humanity in order.