The manga, illustrated by the same author as Witches of Adamas , follows a world where a sudden outbreak occurs. The protagonist discovers he (and possibly other men) may have unique adaptations or "powers" to survive the spread, which leads to his goal of building a harem in this new, lawless world.
If you remember seeing that phrase, it likely came from a re-uploader trying to drive traffic. The real raw Chapter 12 is identical across all Japanese sources. The manga, illustrated by the same author as