Boku no Tonari ni Ankoku Hakaishin ga Imasu.

Seri Koyuki attempts to maintain a typical school experience but finds himself frequently paired with the eccentric Kabuto Hanadori. Kabuto is a high school student with unusual delusions, including the belief that he is a knight on a quest and that taking off his eyepatch will awaken a darker persona named Michael Offenbarung Dunkelheit. Seri resists being influenced by Kabuto's erratic behavior, though he faces challenges in keeping his own footing amidst the chaos.