The erotic energy emitted by people——”Inki”. Salirose, the youngest girl of the Sennet family witches, who have the ability to absorb that energy and turn it into magical power, is a failure unable to do so. However, a recently dispatched fort commander, Captain Judius, is the only person whose Inki she can absorb, and it’s incredibly delicious…! Wanting to taste even more, she works hard to get the straight-laced captain into an erotic mood, but how did it turn out this way?!