First they used the monitoring from outside the chamber and received no feedback, at all. Then, some trials began. Parodies:
![(C89) [Inariya (Inari)] Inariya-san Chino Omake Bon Hacka Doll Fuyu (Hacka Doll) [Chinese] [瑞树汉化]](https://img.hentai2.net/uploads/1667/166731/poster.jpg "(C89) [Inariya (Inari)] Inariya-san Chino Omake Bon Hacka Doll Fuyu (Hacka Doll) [Chinese] [瑞树汉化]")
First they used the monitoring from outside the chamber and received no feedback, at all. Then, some trials began. Parodies: