The Assassin's Soft Spot For Him. (Sanegiyuu/College And Modern AU)

Giyuu tomioka is an extremely skilled and intelligent assassin and a great student in college, who's disliked by others for his social skills and lack of friends..while sanemi shinazugawa, is an intelligent boy in college, who is popular yet feared but liked by others.
they decide to try and get along with each other and did it with success. they became great best friends but...
what happens when sanemi finds out on why giyuu has been going out so many times at night and before sunrise?
what happens when sanemi finds out that he has weapons such as guns?
what happens when sanemi finds out why giyuu's body has bruises and scars all over him?
what happens when sanemi tries to investigate on why he is like this?

read to find out..

(I will make his personality kinda similar to maki harukawa from danganronpa v3 killing harmony. But..giyuu's backstory will very similar- no. Probably the exact same as maki harukawa's backstory. Also, I made him a little bit judgemental in his pov. Oh and also, slow updates.)