An Immortal Observer (COTE x OC Fanfiction)

Metropolitan Advance Nurturing High School. A school that's been established by the Japanese government to nurture students who have been deemed to support the country as it boosts a 100% employment and college entry rate, and with thorough, teaching methods, it spares no effort in pursuing the nation's desired future.

But what if there is an immortal being attending this school just because they are boredom?

Disclaimer:
I do not own the story the Classroom of the Elite, I only own the original characters I insert in the story. All credits go to the original author of the story, Shougo Kinugasa.
I also do not own the pictures and illustrations that I will be using in the story. All credits go to the original Artist.
I only own the original characters I will be putting on the story.