Eiyuu to Majo no Tensei Love Come

Shiraishi Gomichi is a high school student who remembers his past life in a different world, where he was a hero who saved humanity. In this life, he expected a normal existence until Mai Shiina, a transfer student, joined his class. Like him, she has also been reincarnated—she was once a witch who caused great destruction in that other world. They had been enemies in their previous lives, but when Gomichi asks her about her intentions now, she declares that she cannot live without him.