plastic memories
A 2015 anime series by Doga Kôbô.
Plot
Giftias, androids possessing a humanlike appeareance and emotions, are available as companions, but they have an expiration date. Meet Tsukasa Mizugaki, a new employee at SAI Corp. He gets paired up with Isla, a childlike female giftia to recover others close to their expiration dates. He falls in love with her, as many others do with their artificial partners and letting go is never easy.