both are girl power spy/detective stories with unexpected partnership.. they are also fun lighthearted comedies..

both have leads that are not taken seriously by their colleagues, and they end up uncovering a big case. a lighthearted sismance/bromance unexpected partners comedy detective story..

they both give out the same vibe, a strong cold male lead and a sweet bright competent female lead~
the overall crime genre are different, one is a gangster and one is a cop son of a murderer, but they both have that tough but sweet character..

the 3 girls in Be Melodramatic and It's Okay To Be Sensitive drama have a similar "vibe" between their characters...

Be Melodramatic is kinda like the 30 year old vr of Age of Youth? friendship, love and life problems..

they are both related to the orchestra setting.. and both girls are kinda "eccentric" but in a good way xD

both My First First Love 2 and Weightlifting Fairy Kim Bok Joo were similar in the way they were both light and cute friendship dramas...

Super Band is similar to Immortal Songs, because they are both covering famous songs, but SB is for rock bands?

they both have that "do anything for specs" thing.. but Class of Lies is more focused on the students

among the school series, I feel like 2013 match this the most.. it's like the 2 guys switched roles?

Angry Mom is about a mom disguising herself as a student to find out what happened to her daughter, while Class of Lies is about a lawyer going in as a substitute teacher?

they both have a solid team, and they are both about something different than the usual "crime/investigation" team ups...