Both are bubbly, fast paced, and fun Japanese BLs with endearing characters and upbeat, often hilarious moments. Both have a very similar tone an school setting.

Same actor as the ML. In both he is extremely devoted to the FL and will do anything for her. Similar tone and setting. Both are very interesting dramas that don't lose their pacing in the second half.

ML starts out gentle and kind, then his family is stolen from him, he is presumed dead, and his personality shifts into revenge and hatred for those responsible. He returns and reunites with FL who helps him heal/reunite with what's left of his family. The tones are similar and both have happy endings despite being darker stories.

The main characters have suffered trauma and are emotionally and physically damaged. ML doesn't value his own life much and comes across as a tough character at first but later has the softest heart toward the FL. Hopeful ending, despite all the suffering. Also similar tones and city night scenes.

The main characters have deep emotional wounds and trauma and start to heal with each other's help. There's also a scene where ML clings to/hugs FL that reminds me so much of a similar scene in the other drama. Both feature happy endings after much suffering and heartbreak.

Characters bonding over their shared loneliness and trauma and healing together. Both are sad stories with happy endings and both are Korean dramas.

Similar in tone and setting but very different plots. Very devoted ML who won't give up on FL.
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Character pretends to be a eunuch (FL vs, ML) which causes confusions in other main character's feelings toward them. Mix of light and serious moments. Historical setting.

Same actress as FL. Her character goes through many hardships and a lot of growth. Both are slower paced dramas with similar tone and setting.

FL and SML is the same actress and actor in both and SML dies in front of her, in love with her, in both dramas. Misunderstandings and sacrificing between both couples. Similar tone and setting.

FL is only female student at male academy, there to fulfill her deceased brother's wishes . The time period is different but both are historically set.

Zombie apocalypse featuring group of strangers struggling to survive together. ML is trying to save a loved one and is willing to go to great lengths for their safety. ML changes a lot over the course of the story. Common themes of tragedy and emotion.