Suddenly, a light shone at my feet, and when I came to, I was in an unknown place. It seems that this is another world, and I was somehow involved in the summoning of my classmate, who is a saint. Because I'm an extra, I'm treated carelessly. I can't trust this country. "Are you alright?" "...the emperor?" "I mean the emperor's younger brother." As the fiancée of His Imperial Highness, I'm going to the empire. This is the story of how I, who thought I was a side character who gets involved in things, was actually not just involved. There's not much hero activity. It's a convenient story, so please read it casually. The main story was completed on 2022.09.28. The epilogue was also completed on 2022.10.30.