Slave Doll

Slave Doll (こわれもの) is an H anime OVA created by Otakey Sasaki released in 1999. The series revolves around Aki, a busty android maid constructed by the Gene (pronounced Gen-a) Corporation. Her function, besides being a household maid, is the collection of male genetic material (semen) through sexual means, after which it is saved, possibly for species preservation.

Synopsis
Aki is an Android maid created by the Gene Corporation sent to infiltrate the house of the mysterious Kenichi. She disguises herself as an ordinary housekeeper and begins her mission to capture a sample of Kenichi`s superior sperm which is made easy by her master's insatiable lust towards her.