From Square Enix:
In the pet shop he calls home, a chubby, homely cat whiles away the hours listening to coos of delight from potential pet parents but he knows it's not him they're fussing over. Even as his price drops with each passing day, no one spares the kitty a glance. Having all but given up on life, the feline dejectedly awaits his first birthday, when he'll officially be past his sell-by date. So when an older gentleman comes into the shop and wants to take him home, the kitten himself is most shocked of all. Will the man and the cat find what they're looking for...in each other?

Official: SQUARE ENIX (Gangan Pixiv, Manga Up!, Shounen Gangan), Pixiv Comic, Nico Nico Seiga

Official English Translation: Manga Up!, Square Enix

Official Korean Translation: Bookcube, MrBlue, Naver Series, RIDI

Note: Runner up for the Grand Prize at the Next Manga Awards in 2018.