Ashita Mo Mata Yuusha No Tonari

Ashita Mo Mata Yuusha No Tonari summary:

Mao Kurose can't help but be intrigued by her classmate Kanade Momomiya, who sits next to her. She's got these mixed-up feelings she can't make sense of when suddenly, she remembers the moment when she, as the Demon Queen, killed the Hero. And that Hero has the same face as Momomiya...A girls' story that transcends time!