Mou Ichido Kimi ni, Propose S01E01 - Episode 1

Kanako and Haru are a typical married life. One day, Kanako collapses and undergoes surgery. Though surgery itself was a success, upon waking she forgets her five years of marriage along with her husband. When released from hospital, she tries staying with him, but it it just too unfamiliar, and with her feelings for him gone, she decides to stay at her parents' house instead.