ZoologyKaM

The happy but sometimes stressful life of pets owners, except the pets are mythical creatures like a Maou, a Zombie, a water dragon, and even the old lady down the street has her pet Yuusha(hero). 

The concept is extremely cute but there's even more to it than that. Watch as the pet Maou, Satan, and his owner grow together as friends and family!  I won't spoil it but the ending is so satisfying and well done. Worth a read so much that I've read it twice!