A Family Should Always Stick Together

[Infinite Flow] Fang Junheng, a high-end cleaner, lost his job because of his obsessive-compulsive disorder. Then he spotted a foreign job posting with some "shoddy translation," as he saw it:

Job title: Multidimensional Space Janitor

Job duties: Handle the "dirty work"

Requirements: Courageous, detail-oriented, steady hands

Pay: Generous! Extremely generous!

Only after he was forcibly transported to strange worlds to take part in various "cleaning" missions did he understand. The contract he'd signed wasn't an employment contract at all. It was a lifetime deed of servitude...