A journey that begins with a problem child

Story of: A journey that begins with a problem child

I am recognized by a mysterious necklace and have the ability to travel through multi-dimensional universes. I am not a righteous warrior, nor a dark devil. I only follow my own inner actions, whether it is good or evil, and I start in the second dimension as I please. my trip.(PS: Harem, but not stud, this is very important.)