When a succubus shows a man who's got a good compatibility with her a naughty dream, his body becomes unable to ejaculate with other women aside from the succubus herself.

1.) Succubus no Rinjin / A Succubus' Neighbor

• Hal had a problem that he couldn't tell anyone. He's been having lewd dreams recently, night after night. Appearing in those dreams are his neighbors, a mother and her daughter.

2.) Succubus no Rinjin 2 / A Succubus' Neighbor 2

• The female protagonist's older brother and his succubus wife are going on a trip all by themselves, so she was asked to look after their son, her nephew Takeru.