Claim: The first episode of Kill Me Baby, a Japanese four-panel manga series written and illustrated by Kaduho, was titled "Sneaking Dog, Blossoming Cherry" and aired on January 5, 2012,  and it was about a girl named Yasuna Oribe who finds a dog with her hired assassin and they try to find a way to get rid of it.
Evidence: Kill Me Baby (キルミーベイベー, Kiru Mī Beibē) is a Japanese four-panel manga series written and illustrated by Kaduho which began serialization in Houbunsha's Manga Time Kirara Carat from July 2008. "Sneaking Dog, Blossoming Cherry"
Transcription: "Inu o Shinobi te Sakura Saku" (Japanese: いぬをしのびてさくらさく) January 5, 2012 (2012-01-05) Yasuna Oribe gets a lot of injuries from classmate and hired assassin, Sonya. When a dog wanders into the classroom, the two think of a way to get rid of it. Later, Yasuna meets a self-proclaimed ninja named Agiri Goshiki who tries to sell her some 'ninjitsus'. Voiced by: Chinatsu Akasaki (Japanese); Hilary Haag (English) A normal high school girl and self proclaimed friend of Sonya, who is often friendly to Sonya despite how dangerous she is. She tends to take on the brunt of Sonya's attacks whenever she takes her by surprise or goes overboard with her pranks. She is quite simple minded and is not afraid of Sonya at all, despite the fact that she is an assassin.