What is the ghost ending in Happy Hammer?

Finally, the undercover identity was exposed and forced to go to the rooftop, but the chaotic relationship disturbed the three people's thoughts. After figuring out the relationship, the three men shot each other, and all three died suddenly.

"Happy Hammer" is a domestic funny animation, which has been updated to 390 episodes. Hammer, the protagonist, is an optimistic, kind and ordinary young man with dreams, and a series of satirical stories have been launched around him. Taking animation as the carrier, the short stories in daily life are interpreted in a humorous way, which arouses the audience's singing and transmits positive energy, and is deeply loved by fans.