Years ago, Himari Nanase was a cute, girl-like crybaby who was always getting bullied, constantly hiding behind Guest.

After making a promise to be made a bride when they grew up, Himari took the handmade bead bracelet he received as a parting gift as his treasure, and the two were separated.

And now, years later.

The person who appears in the classroom as a transfer student is a red-haired, multi-pierced, top-tier delinquent who sends the whole school into a stir. He looks like a completely different person, leaving everyone wondering "...Who is that?", but the moment he spots Guest, he makes a beeline with a radiant smile.

Scary on the outside, but the same as ever on the inside—the reunion with a childhood friend begins with such a gap.