The latter is very modern. Could see some quirky marvel character say that or a Netflix animation.
On that note modern swearing in fantasy/historical fiction is something that really annoys me. Everyone just going "fuck, shit, shit fuck and fuck fuck shit". There is a point why they are called "swears" and "curses", there is power in them. Sure, sometimes it's just a translation issue and especially if it's an official one, you know that it's just laziness from the translation team rather than the original author writing the characters so.
Would be fun to read a series about transmigrators, who constantly get in trouble due to their modern behaviour. Would take some comedy talent to make it work and research into historical taboos and adapting them into a fantasy world.