Wikipedia
Troubleshooter or Resolver (; Haegyeolsa) was Shinhwa's debut album. It was released on May 9, 1998 and became quite popular among the fans. The boy band was first seen performing on KM Music Tank with their first song, "Haegyeolsa" (Resolver). The song grew to be popular and reached a few number one on some chart. Their second single from the album was "Eusha, Eusha". Because "Eusha, Eusha" was a lighter song in comparison to Resolver, which was a dark mood song, and climbed up the chart quickly. However, around the same time, a water accident had occurred on a beach, causing people to use the song, "Eusha, Eusha", as a reminder of the accident, despite it being a happy, light-hearted song. Quickly, Shinhwa move to their third single, "Sharing Forever", which charted fairly well as well.