If you're head hunting for polarizing anime with borderline underage sexual objectification, you could have gone with the "That Time I Got Reincarnated as a Slime" anime - take one look at the clothing (or lack thereof) of Milim Nava.

In before people furiously try to rationalize by saying, "Well sure she looks like she's a prepubescent 12 year but ACTUALLY she's 3000 years old", yeah okay sure - but as the saying goes "if it looks like a duck, walks like a duck and quacks like a duck...".