Steins;Gate 0, Boku dake ga Inai Machi Recommendations
Both series rely on the concept of 'Time Travel' and 'Time Leaps'. Anyone with a thing for time travel should watch this series.
Both revolve around time travel and the main protagonist's prime goal is to save someone using time travel
both have similarities in terms of storyline and character, in which the main character has an bad fate and is very suffering from the person he loves being killed.