Beware of Your Boyfriend

You are reading Beware of Your Boyfriend manga, one of the most popular manga covering in Drama, Romance, School life, Webtoons genres, written by 이네 at MangaPuma, a top manga site to offering for read manga online free. Beware of Your Boyfriend has 68 translated chapters and translations of other chapters are in progress. Lets enjoy.
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Da-In and Si-Hyun are in the same class, but they've never spoken to each other. One day, an unfamiliar guy appears and says he is the Lee Si-Hyun from the future, and that they'll go out with each other. Da-In doesn't believe him, but as his predictions come true, she starts to trust him. As Da-In shows interest in Si-Hyun, their classmates say they are flirting with each other. However, Si-Hyun has a twin who looks exactly like him. Just what is the identity of this unfamiliar guy?