"I just want to be lazy!!" Haruto, a college student, who dreams of being surrounded by fluffy pets and enjoying delicious food, wakes up one day to find he has been reborn into a different world as Prince Phil Gleshart (3 years old). He starts working towards his long-awaited lazy life, but... his pet is a fierce beast?! Everyone loves his food?! Whatever he does seems to backfire, but surely he'll be able to relax someday...?! (Source: Alpha Manga)

I, Ichinose Haruto, am a college student that reincarnated as the small country of Greshart’s youngest prince, Phil Grishart. Living a previous life that’s full of restraint, in this world while petting my beloved fluffy pet, I’m going to live a life full of freedom! Or so I thought …… But starting from summoned beasts to spirits, ores, and monsters. The more I know about this world the more evident the outbreak of trouble is. I want to live a lazybones life, but it’s not possible at all! I want to be lazy but I can’t, Phil’s tale is just about to begin!

Haruto is an ordinary Japanese student who is tired of constant work and study. After getting hit by truck, he is reincarnated as Phil Graceheart, the youngest child in a royal family. When Phil is three years old, he gets a head injury that causes him to remember his former life. Armed with the knowledge of his past self, he is now on a mission to live a completely relaxing and carefree life.

Suddenly, her parents traveled abroad, and Souma Kohinata, a high school student who remained alone in Japan, decided to live with writer named Isourou Yuzuki. On the evening of the day she moved to the old mansion where Yuzuki lives, Souma suddenly meets a lovely little demon. In fact, in the garden of Yuzuki's house, there is a warehouse connected to the world of Ayakashi, and Yuzuki was the manager of that warehouse! From that day onward, the friendly youkai who began to gather around Souma. However, strangely, the youkai seemed to be familiar with Souma when she was younger.