The Princess's New Clothes (2023)

Both are mini dramas in which the FL is wronged and dies in the past, only to find herself or her reincarnation in the present day working in an office surrounded by duplicates of the people she knew. Both FLs, stronger and smarter, set out to not make the same mistakes again.

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