[DeepL Translation - needs review] Introduction to Volume 1: [60,000 words added from the web version!
I was reincarnated as the villainess Yumiera in an RPG-type otome game. But actually, Yumiera is a character who is not very good in the main story, but after the ending, she reappears as a back boss and competes with the heroes--in other words, she is an extremely high-spec character! My gamer spirit was ignited, and as a result of my training, I had reached level 99 by the time I entered...
It's quite an enjoyable read for a LN (that is, assuming you don't mind OP isekai tropes aimed at teens). Heroine's thought process is funny, and there is a variety of cool, tense, serious and romantic moments.
From language learning point of view, the vocabulary seems manageable, mainly fantasy staples with some modern-day terms sprinkled in, but there is some archaic grammar.