That boy with the septic eye - Septiplier Siren School AU

Despite being an undercover siren, Seán "Jack" McLoughlin manages to keep up his reputation as a mysterious green-haired boy with heterochromia.
Mark "-iplier" Fischbach is a korean transferee student being adopted by a kind family who run a coffee shop. The red-haired and lively teen saunters through the school gate with every intention of making friends, which his magnet-like personality gets him. He quickly becomes a highlight and top-grade student, juggling being a rebellious half-time punk and being a closet bisexual.
Finally the two meet, although who'd've thought they'd have so much in common?