Whenever someone moves into this share house, every resident must join a King's Game at the welcome party. Dating between housemates is strictly forbidden and getting caught means immediate eviction, but sexual play without romantic feelings is perfectly acceptable. The female residents—including adult college students, office workers, and part-timers—eagerly join in. With hardly any other men around, the new male resident finds himself in a harem where the game's outrageous commands quickly turn into very naughty fun. Wild as it sounds, the game also helps the housemates get to know one another.