Elf Kyouiku: Boukoku no Mist

The Elven Queen Mist is held captive, bound and tortured, but protected by her elven magic, she smiles with ease. However, her magic is stripped away by the human king Rex's insane love and schemes! She is implanted with a raw sensation that an elf would never feel in her life, the "pleasure of a woman"... The unfazed and overwhelming Queen Mist's face distorts lasciviously at the unknown sensation, and the mad king Rex's true "education" begins...!!!

(Source: Melonbooks, translated)

Note: Released at Comic Market 104