Cat Companions Maruru and Hachi Vol. 3 (manga)

Stray cats Maruru and Hachi were taken in by Yasuo the Catnapper and are now living in the shelter. Maruru used to be a house cat, so he’s friendly with the humans, but Hachi won’t let his guard down. While at the shelter, they’re reunited with another stray friend, Sabi-neesan, and are living pretty peaceful lives - until Hachi is taken away by Yasuo, and they hear him scream...