If you want a crime drama that treats its mystery as more than a puzzle, Dear X is available in the US on Rakuten Viki right now. A compact run that never overstays its welcome. Its 8/10 TMDB score, built from 106 ratings, reflects a title that consistently delivers. Watch Kim You-jung work — the performance is a masterclass in restraint. There is no real reason to keep putting it off — it is right there on Rakuten Viki.

Dear X arrived without much fanfare and built its audience the hard way — through word of mouth. The plotting in Dear X is tight enough that the twists feel earned rather than assembled. Behind a beautiful face hides a cruel nature—Baek Ah-jin, who sees through and manipulates others' hearts. After stepping on the sacrifices of many to reach the top, everything begins to change the moment she arrives there. A woman wearing a mask to escape hell and climb to the highest place. The writing gets a boost from Kim You-jung and Kim Young-dae, who sell every scene they're in. It was aired in 2025. The plot mechanics of Dear X never overwhelm the human cost underneath them. The consistency throughout is what elevates it — not every moment is the best, but none of them are a reason to stop watching.

Crime and mystery fans will find exactly what they are after in Dear X. Viewers who responded to My Roommate Is a Gumiho will find a lot to like here too. It is a manageable watch, easy to fit into a single week. Watch Kim You-jung work — it is a masterclass in the genre. Few crime dramas earn their twists this consistently.

Dear X wrapped up in 2025, created by Ban Ji-woon — and 1 season is available to watch from start to finish. Find exactly where it's streaming below, and TV Butler Pro's free voice app makes it effortless to track your progress as you go. Just say the name, and Butler finds it instantly, tells you which service has it, and remembers exactly where you left off.