I’ve stopped watching K-drama reviews because every drama seems to get high ratings, even though most of them feel exactly the same. Many K-dramas are also quite unrealistic. This particular drama feels like a typical K-drama to me, with familiar elements like childhood friends, time bombs, a boy who's good at swimming, and a boy who secretly loves the girl but doesn’t show it. There’s also a clueless girl with no common sense who works in an office and has a crush on the lead character. There are a few differences, though like the fact that the girl is well-educated and faces a lot of hardships.