Responses
I don't think they did. This loop ended on them surviving and reaching the outside world. And Hyun saying "Happy B'day" was indeed confusing coz all I can suspect is that the final loop lasted for so long that it became one year ??? Or he might have been just wishing Hyungwon after remembering his birthday. Either way the babies escaped and can be together forever !
Wait so did they just loop back to the beginning again at the end???