I read the ending on Baidu, so in the end they see each other through video call. Their relationship became star-crossed, and ended with them meeting through videocall. Even as the audio failed, they kept talking, reading each others' lips.
Yeah I hate translating, it's awful, so many lines, gotta get the same feel across languages, etc. Donuttag forever thankful to ppl who sub dramas in languages idk
Some people may not be satisfied with the end, but I was. Especially with their monologues. I like how they left it with them at the beach, it was perfect, he wasn't ready to face marriage, but they had committed to each other and had reached a pinnacle of their growth together and individually. By leaving it off there we know that their are fights etc like all relationships, but they'll work it out. It's like they are saying, don't be afraid to love. Commit and work together to face the unknown.
he's the friend/step brother of her ancestor.