Jun and Jun (2023)

Office relationship, where one of the leads falls for the other and realizes their feelings earlier, while the other seems to need more tome to realize or admit what they feel.

The leads meet again in a work-related setting after years of separation. Childhood and young adulthood connection develops and the sparks are back.

I recommend this both drama because , Male lead and Female lead
try to solve problem
In one drama explosion and another student murder/suicide