KIM TAEHYUNG is a top businessman and involves in mafia (it's a rumor everyone talks about him because of his cold behavior towards everyone)his father used to abuse him in his childhood when tea was 15 he killed his father and got out from jail because it was considered as self-defense he lives with his mom who always being cold with Taehyung because he killed his father that is the reason he never wanted or believed in love he just ignores everything and only focuses on his work as always there was interview in his company, but a woman caught his attention she is clumsy and cute but also intelligent Taehyung kinda felt attracted to her and took IU out in the name of business because he always wanted her attention and she also cared about him and gave the care and attention to Taehyung he did everything for her, but her bestie also loves her he was aware that Taehyung loves her yet bogum didn't confess her Taehyung don't like bogum as he was always touch her and hugs her Taehyung was kinda become possessive and proposed to IU at first IU didn't agree but later Taehyung persuade her, and she also fell in love Taehyung and IU started dating and bogum got to know about that, and he wanted to sacrifice his love but IU and bogum meets each other they were always clingy that really pissed off Taehyung bogum was also not giving up on IU, but IU was loyal to Taehyung but bogum got to know about Taehyung past and informed that information to IU family didn't accept Taehyung and bogum also started to brainwash IU Taehyung still kept with their tantrums as everyone say patience has its limits and bogum and IU family crossed the line Taehyung was already a disturbed soul because of his father his mental health was not that gud he has trust issues he is possessive and maintains everything he was an organized man he was kinda psycho, but he cares and loves only his mom after that women IU after knowing Taehyung past IU accepted it and still loved him, but at that time bogum proposed her and said he was leaving the country because he can't watch her being with,, someone else bogum and IU were childhood friends IU couldn't able to bear that bogum is leaving now she was confused in that confusion her parents were disrespecting so Taehyung wrote his all properties and shares upon IU they used it, but they didn't respect or at least considered as a being Taehyung had enough he killed IU'S mother who came to his company and made a drama. Taehyung have a dignity to maintain he can't let anyone disrespect him. Her father got to know the truth, but IU didn't believe it bogum came back,, and got to know about her mother's death bogum started getting himself so involved into their life and he heard rumors about Taehyung being in a mafia so told IU that her mother made a drama at his company Taehyung couldn't able to control his instincts and killed ur mother and IU finally believe it and she send Taehyung to prison without knowing the whole truth even after accepting everything yet Taehyung wanted IU like crazily he loves her, so much he was released because of lack of evidence he again went to IU when tea was i custody IU Fell in love or realized that she loves bogum she married bogum Taehyung couldn't able to take that and kneeled down before her and begged,,, but she grabbed a knife, and stabbed in his heart, and killed him because she believes that he killed her mother in the end he was alone tears were streaming,,,, yet his last words were "I LOVE you extremely" he gasped for aIr, and "will always be", and he has nothing left love respect his company shares and even his mom was also against him because he killed his father he was all alone her mother did the funeral and IU and bogum lived happily married and had 2 kids