I'm pretty sure this was from a BL novel, not too sure if it was QT or just regular transmigration though >.< I can't remember anything about the book except that the system attached to the MC switches quite frequently. It even turns into a running gag because the MC does things so strangely that every system assigned to him ends up getting kinda freaked out and wants to leave ASAP. The MC himsellf doesn't care one way or the other what happens to all those traumatised systems though--he just keeps doing his thing the way he usually does. Any chance this sounds familiar? Thank you!