The sucky life of a Immortal (pertemis)

Percy catches Annabeth cheating on him do he curses her so she can't go on a ship or any vehicle pm water proto into the sea without dying or getting fatally harmed . Percy then gets blasted to tartarus literally where kronos and the other Titans he defeated come and turn him immortal and torture till they realize he is broken and they bless him and leave him to survive all Alone in tartarus ...
.. literally.