After being reincarnated as a rich person's dog, Routa's living the high life. Sure, there was the whole thing with him becoming the Demon Wolf King and fighting dragons, but aside from that, he's been enjoying a pretty lazy, luxurious life. That is, until the family decided to take a trip to the royal capital...
"That...wouldn't be anything like the fun pet life I wanted!!"Now that Mary's fallen ill, Routa's pampered-pooch life is in jeopardy! In order to cure her once and for all, he'll need to do some actual work for a change! The medicinal flower he seeks, however, is guarded by a fearsome dragon, and he's got a lot of ground to cover if he wants to make it to its lair. Will he be able to overcome his trauma for the one he loves most, or is Mary doomed to relive this cycle of sickness every year?
When Routa dies without having done much with his life his only wish is to be reborn as the dog of a rich family, but he soon learns he is a large and powerful dog and gets into too much trouble.