HACO(2010)

HACO

After Kusakabe Honoka is diagnosed with an untreatable disease, her father puts her in cold sleep in hopes for the future. When she wakes up, it seems all of civilization has been destroyed. All she has to help her in this future world is Haco, a dog-like robot that was created to protect her. What happened to the world while she was asleep!? (Source: OneManga)