明日もまた勇者のとなり (Series) favorite_border

[DeepL Translation - needs review] Volume 1 Introduction: In their previous lives, they were a demon king and a hero, and in this life they fall in love... Mao Kurose can't help but be attracted to Kanade Momomiya, who sits next to him. Unable to sort out her feelings, she discovers that she is the Demon King and has a memory of killing a hero. And the hero has the same face as Momomiya. Here comes a GL story whose sadness transcends time!

(Translator: DeepL)