Yeah, the status even as 'demigod' should cover most basic needs of defense against many stuff which would crap regular adventurer's pants. Perhaps closest to isekai would be siberys heir marks but much earlier than 12th level. A once per day a ability use powerful spell (7-9 level range) would be powerful ability in world where such things are lacking. Atm I am working on custom world in here (https://elliquiy.com/forums/index.php?topic=298635.msg14610873#msg14610873) if interested take look Kunoichi. As I intent build world varied so it can do variety of stories (albeit already I got poll voting done for story which I run somepoint; intrique, smut with some horror elements and classic 'chosen one' heroism sprinkled a little in).