It seems like Adolescence Medley was inspired by Reply 1997, it has a similar past-to-present story format. Both have cute love stories and sucker the audience into a false nostalgia. R'97 is more silly and fun, while A.M is artistic and sweet. I promise both are worth watching.
Totally not the same, but both are melodramas with bullies, murder, and mysterious pasts in their plots. Both have Kim So Hyun in them, and she's always fun to watch. Truly talented young lady. Missing you is a lot darker and bolder but both are super interesting and hard to put down.
Quirky gender-benders with handsome men, romance and idol actors.
Although Let's Eat is light comedy and delicious while IHYV is fantasy and intense (occasionally this has its silly moments too, mind you), they are both refreshing stories about women that work in a law firm, have developing noona-dongsaeng romance, and a vengeful psycho running amuck.