Doubt - Uncover the Lying Man (2019)

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

Amaki Rinko is 27-years-old and single. She works as a wedding planner and has been promoted to chief of wedding planners. She is recognized for her excellent work at her job and also as a person with a good heart, but she has a complex. That she is still a virgin.

Meanwhile, her colleague Kamisaka Gen is also 27-years-old and single. He has the most contracts as a wedding planner. He also has an attractive appearance. Rinko happens to know that Gen is also a virgin. Rinko invites Gen to a love motel.

~~ Adapted from the manga "Rinko-san wa Shite Mitai" by Fujita Mio.