Read manga: Suzunari!

manga
Other name: スズナリ!
Artists: Iwami Shouko
Status: ongoing
Latest chapter: Vol.2 Chapter 1
Updated at: Aug 25, 2019
Summary:

Kaede is a sweet and kind-hearted young lady whose life is suddenly thrown off-balance by the appearance of a strange cat-girl, Suzu, who looks remarkably like her. Before she knows quite what happened, Kaede finds Suzu has moved in and is living as her younger sister. Who is this girl?!?