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Both fathers of the main lead was sentenced to prison for the crime that they did not do and being threatened to admit to the charges with the safety of their child. They are both not able to defend well for themselves due to one having Alzheimer's Disease and the other being intellectually disabled.
Both female lead is a vampire who falls in love with a human male lead. Both show the vampire family members and friends (second male lead) of the female lead and in ICHY, the vampire clan has evolved that they no longer drink blood but gained energy through human contact. However in ICHY, the male lead is a germophobe (dislike human contact) and in OM, the male lead hates vampire.
Both male leads are transfer students and one party is treated as a younger brother or friend at first. Both couples spent a long time to get together after a series of misunderstanding but Love @ Seventeen took much longer and even advanced into workplace.
Both male lead had near-death experience with bullet stuck in their head however one is a grim reaper whereas the other is a police who can communicate with the dead to solve cases.
Both dramas involve doctors treating the patients on the sea whereas one is in the korean style and the other in the japanese style.
Both male leads are famous and highly skilled chefs whereas the female leads with strong sense of taste, are cooking at a small foodstall/restaurant trying to accomplish their dream of remaking the taste of their fathers' cooking (Curry for TPM and fried rice for AHOY).
Both female leads have extraordinary sense of smell and have a talent in making best and unique scent/perfume. Both fell in love with a rich male lead and have to overcome many obstacles to be together in the end. LJC sets in the modern era whereas LOF is in the ancient era.
Both have intelligent female lead and male lead as the eldest grandson of the royal family (show the process of how they manage to become the emperor in the future). Both female lead have misunderstanding about the male lead at first. Both couples have a rather similar ending (watch to know more).
Both have intelligent female lead and male lead who is a prominent figure in china history. Both male lead only loves the female lead and they have to overcome many obstacles to finally be together. However, both couples are not able to spend the rest of their lives together (watch to know more).
Both involve friendship and romance among a group of friends in the 1990s. Both with the theme of youth and things they learnt in the process of growing up (e.g. What they lost or gained while growing up, the responsibilities they will have to take up upon turning into an adult)
Both involve the process of friendship developing into romance. One of them used to have a secret crush on the other in the past and yet did not manage to work it out.
Both involve love, friendship and family interactions in the past (1950s-2000 in The Story of Time & 1995-present in A Good Day).
