Sexy Chronicles of Demon Queen Melissa

After a spell goes sideways, the Demon Queen Melissa has her magic accidentally sealed away by Rufia, her own swordswoman. Now Melissa and her maid Marina are stuck powerless in a world crawling with lustful monsters, and the only way they can fight back is by harvesting semen to use as a substitute mana source. That is genuinely the premise, and the show commits to it completely. The three women set off on a quest to break the curse, and every encounter along the way involves them dealing with that unusual resource constraint in explicit detail. It is a 2-episode ONA from 2019, so the whole thing is a quick watch with no real filler padding things out. The tone stays fairly lighthearted and comedic rather than going grim, which keeps it from feeling mean-spirited. If you have seen Isekai Maou to Shoukan Shoujo no Dorei Majutsu and wished it went fully adult, this scratches that itch. The fantasy adventure framing is functional enough to give the scenes some context and momentum. If you are familiar with Kuroinu and want something shorter with a slightly more playful energy rather than pure darkness, Melissa sits in a different lane. The core hook is the absurd internal logic of the power system, and the show at least has fun with that concept rather than ignoring it after the first scene.