Kami nomi zo Shiru Sekai (The World God Only Knows) - Keima Katsuragi, known online as the legendary "God of Conquest," can conquer any girl's heart—in dating sim games, at least. In reality, he opts for the two-dimensional world of gaming over real life because he is an unhealthily obsessed otaku of galge games (a type of Japanese video game centered on interactions with attractive girls). When he arrogantly accepts an anonymous offer to prove his supremacy at dating sim games, Keima is misled into aiding a naïve and impish demon from hell named Elucia "Elsie" de Lute Ima with her mission: retrieving runaway evil spirits who have escaped from hell and scattered themselves throughout the human world. Keima discovers that the only way to capture these spirits is to conquer what he hates the most: the unpredictable hearts of three-dimensional girls! Shackled to Elsie via a deadly collar, Keima now has his title of "God of Conquest" put to the ultimate test as he is forced to navigate through the hearts of a multitude of real-life girls. 神のみぞ知るセカイ - 「現実(リアル)なんて、クソゲーだ」 恋愛SLG(シミュレーションゲーム)で"落とし神"と呼ばれる少年・桂木桂馬(かつらぎけいま)は、 冥界からやってきた駆け出しの悪魔・エルシィによって、地獄の契約を結ばされてしまう。 桂馬はエルシィの協力者(バディー)として、人の心のスキマに巣くう"駆け魂(かけだま)"狩りをすることに……。 ゲーム世界の"落とし神"桂馬が今、現実の女性を攻略にかかる!!
