The strongest killer in the city

[The most popular cool articles in 2019]
As a professional killer, I became a student of Li Ruoyun, the school beauty. This school beauty is suffocating but unreasonable, and even made me live in the basement.But I came across the sealed world in the basement. Now I am awesome. I learned various sealing techniques: invisibility, ice control, forbidden life cycle, etc., and it is also a rare crit attribute.
There are too many people who are pursuing the school beauties, and I see one abuse one.There is a hidden family among these people, and they even know the sealing technique. What is going on?It turns out that there is another world outside the world.

Key words of the novel: No pop-up window, the most powerful killer in the city