Clair Obscur does technically have an NG+, though I’d say it’s less of a focus than in Souls games. There is, however, quite a bit of foreshadowing and pieces of the story that you won’t understand on your first playthrough but that hits different the second time through. I personally opted to consume it by watching others play after I completed my own first playthrough, but I’d say there is grounds enough for a second playthrough if that’s important to you.