Tokyo. Two innocent sisters, with no experience beyond rural life, have moved into a cramped 6-tatami-mat studio apartment! Sharing this already tight space with their voluptuous sisters, intimacy is unavoidable, and their desires are reaching a fever pitch! "I never imagined my breasts would grow this much since my middle school days..." These three, at the peak of their sexual urges, can't possibly remain untouched in the same room...
