The reason Ianthe is Like That btw is because the locked tomb is an video game told from the perspective of the NPCs and she’s the Player Character, hope this helps!
Trying to romance every character? ✅
Making the worst possible decisions for no reason other than “unlimited power, and my face on posters”? (That was definitely a multi-choice dialogue option) ✅
Constantly being relevant to the plot and thinking every character in the game loves her even though she has almost exclusively caused misery? ✅
First one to reach the big goal, but not a high enough level for the boss fight, so the NPCs had to step in to remind the game that they are also cool and powerful? ✅
Avatar and clothing change options she keeps using all the time? ✅
Had to level up in friendship with the major NPC of the second arc in order to unlock the legendary item that would boost her weapons damage because she accidentally maxed out on magic in character creation? ✅