Lolimancer

His spiritual companions, artifact spirits and contract beast are girls with the appearance of 15 years old, almost everything is justified by being born with him and being that age but the artifact spirit is thousands or millions of years old and continues with the appearance of a girl.  And one of his wives has the appearance of a 13-14 year old girl and he met her when she was only 4 or 5 years old. 
His greatest powers now are the two little sisters of fire and thunder.