Oyako Rankan is an erotic visual novel with strategy gameplay elements by esteemed eroge maker Alice Soft, released back in 2012. In Oyako Rankan the player takes on the role of a butler working at prestigious household, whose female members are known for their amazingly fertile wombs and supreme progeny they produce. As the protagonist, the player needs do his best to impregnate the ladies of the family before numerous other suitors beat him to it.
In a village, deep in the mountains off the beaten track, lies a house with a headman by the name of Kojiro. Secrets in this house have been ostensibly hidden. The village has been plagued by low birth rate for some time, and as a means to eliminate it, the village was provided with women from the Kamishiro family by the headman. This means was known as the “Feast.” The protagonist, Mamoru, and his “onee-chan,” Kotone, were the only survivors of a big fire ten years prior. Homeless, they were taken in by the Kamishiro family. However, Kotone was taken in as the eldest daughter, and Mamoru has become a servant. The “Feast” was soon upon them, and it was decided that Kotone be used. Kotone accepts this, due to the responsibility she feels to the family and Mamoru. Mamoru, who knew the facts of the feast cooperates with it out of necessity …but.
Oyako Rankan
Oyako Rankan is an Adventure game, developed and published by Alice Soft, which was released in Japan in 2012.
It takes about 12 hours to complete this game.
Difficulty of this game: Unforgiving
After a fire destroyed their village and killed their parents, Mamoru and his elder sister Kotone were adopted into the opulent Kamishiro household. Years later Mamoru now works for the family as a butler. Yet the Kamishiro household holds a dark secret: its riches and influence stem from a ritualistic orgy known as the “Feast”. Kamishiro ladies are fabled for their amorousness, fertility, and the unmatched quality of their offspring, and during the Feast influential men from all around pay handsomely to inseminate these peerless wombs.
Meanwhile the bedridden Kamishiro head Ikki faces exile if he can’t impregnate his wife, the lovely Saya, with the next heir by the end of the month. Pressured by his clients and his scheming lieutenant Shinohara, Ikki calls a new Feast with Kotone as the offering. With clients swarming to the manor like locusts, Mamoru finds himself plunged into a nightmare. Can he protect the family he holds dear–Kotone, Saya, and his younger stepsister Ririko–from the ravages of the Feast until the end of the month?