'OG MC' This mc is the original mc of the first novel which our mc 'Lael'(Arthur) read and finished.
'Extra MC' This mc is the one who also transmigrated onto the same novel as our mc and our mc read some part of that novel but haven't finished the full story as it was still ongoing.
'Our mc' This mc's pov is what I will be writing about the most and hopefully you all readers will start to like him as he might be really relatable as a fellow novel reader.