~Both the dramas include Lee Soo Hyuk in the main cast.
~Both the drams revolve around the concept of gods/grim reapers.
~In both the dramas, some punishment that involves humans is given to the main cast.
~Both of the dramas include some backstories/flashbacks.
~They are supernatural dramas.

~Both of the dramas are nostalgic coming of age dramas that are set in the 90s.
~Both the dramas are a package of ingredients like strong friendship/squad goals, love, and family.
~The dramas consist of a group of friends who together explore different aspects of youth.
~The dramas are about figuring out who the Partners of the female leads are which is shown to the audience by moving back to the past of the main cast and showcasing their whole journey.
~Cute female leads.

~Both of the movies have the same ML(Chen Fei Yu).
~Both the movies show lovely journeys which explore the elements of youth, high school best friends, first love, strong friendships, and also going through some really difficult times.
~Both of the movies give similar vibes in many aspects.
**If u like Secret Fruit...then I'm pretty sure you will love "My Best Summer."**

~Both of them are coming-of-age dramas.
~The main leads of both the dramas met in their youth and together face various problems growing up and heal each other.
~Both,2521 and Upcoming summer explore the elements of first love, friendship, rejection, family, and character development.

Spoiler:-Both of them showed incredibly beautiful journeys of youth and also showed that not everything lasts forever...