1st Kiss

Suzuri Kanna is married to Suzuri Kakeru. After 15 years of marriage, Kakeru suddenly dies in an accident. Prior to the accident, their marriage was going through difficulties and they were on bad terms with each other. Now, Kanna is about to start her new life. At that time, she obtains a way time travel through time. She travels to the past and she meets young Kakeru, right before she met him for the first time. Seeing the younger Kakeru, she realizes that she loved him and she falls in love with him again. She decides to save him from his death that happens 15 years later. ( Source: AsianWiki)