"An Error in Class D (Y/n X Cote)" English version

Y/n Itoshi, better known as "The Renegade Archangel,"
is a boy who was once in the White Room, but due to his lack of talent, he was cast out, disappointing everyone who had high expectations of him...

Years later, he will encounter the cause of his downfall at the Advanced Nurturing High School in Tokyo.
Will he have any chance to prove his worth against "the demon of the fourth generation"?

...

(The images used in this story are not my property; they are only used as references.)