Headmistress Fiora is an insatiable teacher who becomes bored of her teaching duties. She decides to spice things up by asking her favourite student, Riven, and later, her friend, Katarina, for sexual methods of extra credit. Once Riven and Katarina graduate, Lux becomes the Headmistress's new prey... Yuri/Lesbian, BDSM. (Bonus Academy Ahri chapters at the end. [Ch. 19 & 20])

Established Rivelia, past Katariven: In which Katarina is a jealous ex and Irelia is more possessive than some might think.