So, late month reply: i guess. Personally i never could take romance between middle schoolers seriously, so i find this type of ending perfectly fitting.
As for manga on the whole: it was sweet, then it wasn't (drama bordering on melodrama), then at the end pacing changed and i kinda stopped caring. Still finished it, and i don't consider the time spent wasted but...yeah, i probably won't be coming back. Ever. Six point oh, six point five maybe?