Absolute Infinity: OP Male Saiyan Reader x Mass Crossover Harem

{Y/N} was a Saiyan that attended the new school called 'Union Academy' until one day he was abruptly attacked by a strange power that put him into a coma. This left his friends saddened as they didn't want to leave your side but they have no time to mourn as they all have to prepare themselves for the new threats on the horizon....