Would you like to try a romance with me?

Tamaki, a pet sitter, doesn't trust people due to past trauma and can only open up to animals. One day, he gets a request from a a scary-looking pet owner, Hyakuta, who lives in a high-rise building and has a tattoo around his neck. Unlike Tamaki's usual customers, Hyakuta keeps acting irresponsibly in a manner unbefitting a pet owner. Tamaki loses his patience and blurts out angrily, "You call yourself a pet owner?" However, it makes Hyakuta actually feel bad about his actions, so he asks Tamaki to work as a live-in pet sitter. Now that they live together, is Hyakuta's honest affection going to touch Tamaki's closed-off heart?