mel chii's feed

Just saw this again in my notifs after letting it marinate for so long. I was surprised to see that it's at chapter 229, so I took a peak at ch. 228 and then boom, the kiddos are smooching. ( ̄∇ ̄")
Definitely not what I was expecting. I thought they'd be at their late teens at least...

I wonder how the story's going so far? Can someone please spoil me so I can decide if I should re-read it? I'm worried that there's no progression and it's become boring...(〜 ̄△ ̄)〜