By permanently, I don’t mean ‘until dispelled’, which can be achieved by using upcast bestow curse . I want to make those items that cannot be unattuned, except by casting remove curse on the wielder. I want to make it unremovable by remove curse. In short, similar to your traditional cursed magic item.
Are there rule, guidance, or precedent to convince my DM?
Of course there are DM ruling, but it will be helpful if the process can be described mechanically or narratively.