Apocalyptic baddies/ second life/ isekai

~ Apocalyptic
~ Full color
~ new
~ System
~ OP

Whilst the world is coming to an end as various monsters take over, the mc is stuck inside his apartment. His skill is to be protected in the vicinity of the apartment that his parents bought for him. He can’t leave but the system gives him a store that he can buy things with and make money killing monsters. He recruits more ppl in the apartment and his goal is to save his parents.

It’s very interesting and new.