Sugar Rain by Jang-Ryang /Tanyoon

Plot:

After two months of barely scraping by as a hotel bathroom cleaner, Johann is suddenly asked to leave by his predecessor. With nothing but his younger brother, Philip, to rely on, he’s left desperate for a way to survive.

Then, a mysterious man approaches Johann, claiming he resembles someone he once knew—and unexpectedly offers him a job. It might be a scam or something dangerous, but with a salary of $5,000 a month, Johann can’t afford to refuse.

The work seems simple enough—just handling chores in a run-down hut, far from the massive, extravagant mansion nearby. For a while, Johann feels a sense of relief. That is, until he meets Helbert.