Miss Kobayashi and the others go to the beach. But Lucoa's immediately dragged off by one of the lifeguards for her overly skimpy swimsuit. After regrouping, they put sunscreen on each other, split a watermelon, go swimming together, and enjoy summer to the fullest. After the beach, it's comiket! Tohru and Miss Kobayashi both head for the otaku's battlefield, and even Tohru gets shivers from the incredible aura surrounding those otaku. While helping Takiya with his circle, Tohru's horns and wings are mistaken as cosplay?!

Shouta is troubled over how to approach Lucoa about her daily, uninhibited contact. He should be the master in their relationship, though... He resolves to take back control as the full-fledged mage he's aiming to become. So he begins trying to uncover Lucoa's weaknesses.

Two suspicious figures appear in a dark alley under the cover of night. An unsettling air hangs over their secret exchange. "What do you need, asking me to come here?" asks the perverted woman with two horns. "Lend me your power," answers the melancholic man in a butler uniform. And so the most sinister and awful tag team begins to take action.

A typical morning with typical dragon girls. A priceless slice of daily life without any complaints. However, ever since Miss Kobayashi heard the tale from the Emperor of Demise, something has been slightly weighing on her. Yet it's not clear to her what exactly that is. As that uncertainty builds, the summer festival they've all been waiting for is drawing closer.