Here is Honto wa Neko datta grimu douwa chapter 3
Mangadex reader link is here:
https://mangadex.org/title/b80022df-fda7-4814-84fa-687d0d3b37ac/honto-wa-neko-datta-grimu-douwa
Here is Batoto link:
https://bato.to/series/98192/honto-wa-neko-datta-grimu-douwa