There wasn’t much shown about Yuri's life at all in "For your love" so dw, we're just getting started in this one. This is Yuri's story. As far as I remember, Heejoo is his older cousin on whom he had a hardcore crush since teenage. I don't think they're living together, rather it's a stay over of relatives. But there's also can be many reasons for a cousin to live together with you, like studying purposes or stuff (she's a college student in this timeline and they're talking about dorms so it's possible she came over to switch to her college's dorm and Yuri's house happens to be close)
Yeah I’m pretty sure in the earlier chapters it said his cousin’s wedding, not his sister’s.
Maybe is his adopted cousin? Cos is Yuri's father who's taking her to the altar, that's a father job, isn't it? And we don't even see her mother there.. Anyway, I hope to get more answers soon
I'm so damn confused. It's heejoo his sister or cousin? Why did she live with him if it was her cousin? I read FYL but I don't remember a single thing about yuri's life, jesus