Who am I?

Who am I?
Where am I?
.......!?
«Who...»
«You want revange right?»
???
«Then bond with me and after having gone to many world and
done all the task you are asked, I will let you return to your world»
«...»
«so do you accept?»
«You will be able to visit many beautiful world and, after completing the task, you
can do anything so... please accept!» (*^3^)/
!!!
«I...»
«Can I go too!»
«...»
«......»
Why they look at me like this?(^_^;)
It look fun so I just asked...?
Was it bad?
but I want to go...
«I'm sowwy»╥﹏╥
«!?»
«1 more is totally ok right?»
«y-yes I'm a benevolent system so i don't mind
at all, 1 more won't cause any problem»
«really?»
«sure»
«yeah»
«Then lets goooooo!!»(^O^)

This is my first story, Slow update (can take month or year), No schedule, english is not my first language, you can continue this story anytime just tell me before.
I don't own any picture