This is a pretty fun time, but there's no real reason to go back into it. I picked it up awhile ago, but finally decided to get into it now because I've been in a big Dragon Ball mood, and I got REALLY into Xenoverse 2 a few years back, though that file is likely lost to time. This is still fun, it's a good time to grind up a character and make a build. I went with a Saiyan obviously and by the end was basically alternating spamming SSJ2 and Kaio-ken and then mashing Weekend in fights. It was fun. But Xenoverse 2 just replaces it now. I don't think the story of this even really matters for it, like sure it gives a little context but it's not mandatory. Just go play Xenoverse 2.