This is a world where "spirits" exist.
A high school boy, Ichinose Yuuto, who loves his younger sister very much, and his younger sister, Amen, are dependent on each other. Due to an unexpected relationship, they became able to see spirits. They are very rare existences. However, apart from using this ability to expel evil spirits, they live a very ordinary life.
However, one day, a girl, the exorcist Sakuragaoka Hiyari, who wielded a flaming sword, appeared in front of them, and she suddenly confessed to Yuuto...?
"I, I, let you, be, be my boyfriend, I, let's date within a limited time, right?"
"No, don't, you, you are not worthy of my brother!"──Sister counterattacked!
Popular Japanese light novel writers and illustrators have teamed up to launch a love story that is both slightly sad and full of love, opening!
Purpose: Facing difficulties bravely