Chapters 1-10 translated by lilith-art, and chapter 11 translated by azure.zink.
Novel updates link: https://www.novelupdates.com/series/a-comfortable-different-world-life/
Original novel: https://novel18.syosetu.com/n3014dn/
Description from NU:
(For the first 40+ chapters the Protagonist is in a child form. NOTHING sexual happens to him in this form. Ever. -person who has read 99 chapters)
I should have been sleeping in my room, but when I woke up, I noticed I was naked and in a place I did not know.
Moreover, in the appearance of a two or three years old child … …
I was found by a man, he was like a cat with a tail and cat’s ears.
To be protected carefully while learning the language, in a world I do not understand ……