The collapse started when Kiana came to the door

I traveled through time with a phone that could only run Honkai Impact 3.
It is still a collapsed world that is extremely unfriendly to men.
Just when Li Shubai, who had lost all hope, was ready to just eat and wait for death, a bug with a four-star favorability suddenly appeared in front of him.
But soon, he discovered...
...Rather than surviving in the collapsed world, what he should consider more is how to get a relatively decent ending from the women who were discussing breaking up with him.