The comedy lands because it knows exactly when to break character and wink at the camera, stuffing references into every corner without ever stopping the joke to explain itself. The three sisters actually feel like people instead of archetypes, which makes the romantic tension real instead of performative. It's short enough to never overstay its welcome, built for people who want their harem anime to be genuinely funny first and shippy second.
Ren Uesugi and his sister Mihato run away from home to escape domestic violence. They reach the city with almost no money and struggle to find work, until they are finally hired as servants in the mansion of the wealthy Kuonji family and swear total loyalty to their new employers. Ren's job means serving the three Kuonji sisters, Shinra, Miyu and Yume, which brings him into regular contact with the rest of the household staff and with the sisters' friends. Adapted from a visual novel by Minato Soft, the TV series mixes comedy, romance and ecchi fanservice over its thirteen episodes.