The Survival of the Human Race Is at Stake in a Love Gamble Against the Princess From Another World summary:
Interactions between this world and the one ruled by the demon lord have grown increasingly common. Unaccustomed to teaching the denizens of another world, Itou Kazuki becomes perplexed when the demon lord's daughter, an avid fan of shoujo manga, transfers into his class. "If you make my daughter cry, I'll destroy your world."