Monster ga Afureru Sekai ni Natta kedo, Tayoreru Neko ga Iru kara Daijoubu desu.

Kujo Ayame, a newcomer to independent living, shares her home with her tortoiseshell cat, Haru. While returning from a grocery trip, she encounters a transformed world marked by monstrous creatures and people developing new abilities. During a chaotic encounter, Ayame and Haru manage to defeat a large monster, after which both receive notifications about newfound skills. Ayame gains the ability "Search," allowing her to find useful information, while Haru acquires the skill "Conversion." Using these abilities, Ayame navigates the dangerous new environment filled with monsters.