Recommendations

Both are dark mystery/crime dramas with a group of detectives trying to identify a sadistic serial killer. The same actor is the ML in both.

Both dramas have a dark and creepy vibe and are about a serial killer connected to the past and present. Both MLs seem to have a dark side/are believed to have a dark side.

Both are short length Korean dramas in which someone gets a chance to return to the past and attempt to save someone they cared about who died tragically back then.

Both are short length dramas in which someone returns to the past and tries to save the life of someone who died back then.

Both are short length Korean dramas in which someone gets a chance to return to the past and attempt to save someone they cared about who died tragically back then.

One is a BL and the other M/F, but both are about someone getting a chance to travel to the past and hopefully save someone who died back then. Neither relationship was romantic in the current timeline (in SFOT she barely noticed him and in OA he viewed him as a big brother) but becomes romantic when the person travels to the past. Both dramas have a similar sort of melancholy vibe.

Both are set in the time period and explore the tragedy of war upon the civilians. Both are very poignant, sad stories, with a hopeful but tragic ending.

Both dramas are set around the same era, with a military ML and an innocent FL forced to grow up quickly after enduring hardship and tragedy.

Both dramas are set within the world of a story.
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Both dramas are set within the world of a story and the FLs must change the story/their character in order to escape their tragic fate in the plot.

Both dramas are set within the world of a story.
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Both dramas are set within a fictional story world. Both FLs are supposed to be the evil SFL in the story, but must change to survive.

Ikuta Toko has been raised by her uncle in the city of Morioka. She's been active as a local idol with the hopes of eventually becoming an actress someday. When she's 19 years old, she's anxiously looking forward to go to Tokyo for a big audition. However, the day before the audition, Japan gets struck by the Great Tohoku Earthquake.

Ikuta Toko has been raised by her uncle in the city of Morioka. She's been active as a local idol with the hopes of eventually becoming an actress someday. When she's 19 years old, she's anxiously looking forward to go to Tokyo for a big audition. However, the day before the audition, Japan gets struck by the Great Tohoku Earthquake.

Ikuta Toko has been raised by her uncle in the city of Morioka. She's been active as a local idol with the hopes of eventually becoming an actress someday. When she's 19 years old, she's anxiously looking forward to go to Tokyo for a big audition. However, the day before the audition, Japan gets struck by the Great Tohoku Earthquake.