Plot: Y/N is just your typical "normal" young man who is in his last year of high school and is now thinking about which college to go to but then out of nowhere his father tells him that he is getting remarried which surprises the young man because he didn't think his father was going to find himself someone to be with but he supports his dad no matter what as he wants his father to be happy and he wouldn't mind having a sibling or two but then his father tells them that along with him getting remarried he will also have two new daughters this means that Y/N will have two new step sisters but Y/N would find out that his two new "sisters" are actually demons who are on the run will Y/N be able to protect his one is up to the task?!

Name: Y/N Izumo
Hair color: Dirty Blonde
Eye color: Red
Gender: Male
Race: Human. God. Demon
Age: 18
Vital status: Alive
Nationality: Japanese
Appearance:

Tags:
1. The testament of sister new devil
2. Romance
3. Male Reader
4. Harem
5. Determination
6. Ecchi
7. Magic
8. Love
9. Gods and monsters
10. Hero clan
11. Original Characters
12. Supernatural
13. Demons
14. Slice of life