New character: Tuare (Patreon)

One of the new characters you will be introduced to in R15 is Tuareninya Veyron, Sebas' partner.
Unlike most characters "with a portrait", she will not play a big role (In short, no hentai with her), outside of the main storyline, she will introduce a few side events including one which gives you a chance to bring Ninya, her sister, back.

That means Ninya will get a rework (she will get a "portrait") and become a full fledged character, just in case the player chooses to bring her back or replay the game from the beginning.