When I woke up, I found a lover I didn't know... The main character, Kana Oshio, loses her memories before and after the accident due to a traffic accident. One day, when she wakes up in the hospital, a man named ``Kyosuke'' appears who claims to be Kana's boyfriend. After the accident, Kyosuke lives with Kana, who is struggling to make ends meet, and takes good care of her. However, it seems that he has a secret that he cannot tell Kana...!? A slightly suspicious love story that begins when he lives with an unknown lover!