Review Detail of InsertUserNameHere in in the world of Naruto ... (a few years before?)

harem?? and is the story good?? worth reading??

Yes. I think it is very good. But if you don't have patience to figure out what's being said, then don't. Because the writing is really bad because it's just google translate. The beginning can be confusing because it starts a few years before the first hokage is born and the translation is bad. There is a harem, which increases over time as he visits other anime worlds such as, Highschool Of the Dead, Hunter X Hunter, and Hero Academy. To be honest. If the translation wasn't so bad, I would 100 percent say it's worth reading, but it's not.