How often are sentiments like that though? I certainly don't recall acting like that as a teenager, yet these type of characters seem all too common in manga, to the point where it sometimes becomes ridiculous. Of course, here I believe his clear sense of shame curtails these emotions so it is...
If I remember correctly, the whole "making miso soup" exists as a roundabout way of proposing in Japan (at least in the past)
"I'll make miso soup for you everyday" == "I'll be by your side forever"
This has pretty bad grammar and questionable word choice, although it has decent typesetting. If the other group was still doing this (and I haven't seen anything to suggest that they aren't), then I don't know why someone chose to commission this TL? It's not as if it's been months since that...