My best friend since middle school is Hasegawa Aota.

Sota is more popular than anyone. And I am his Friend A, supporting him from the shadows.

Prioritizing friendship over romance—my role, as Hayami Ren, is clear.

Essentially, I assist Sota, the protagonist, and the heroines who fall for him, while also eliminating those who get in their way. Though I work behind the scenes, I'm indispensable in a rom-com.

All that was left was for Sota to start dating someone... or so I thought. But then, one day, a girl appeared before my eyes.

She was like a little devil and an angel rolled into one.

It was my beautiful junior—Shiramine Hisui.