Other name: 只有神才知道的世界; 机神追女攻略; 神のみぞ知るセカイ; 神之境界; เซียนเกมรัก ขอเป็น เทพนักจีบ; 신만이 아는 세계; Kami no Mizo Shiru Sekai; Kami-nomi; Koishite!? Kami-sama!!; Que sa volonté soit faite; Thế giới chỉ có Thần biết; The World God Only Knows; TWGOK; Kami nomi zo Shiru Sekai
Summary: Katsuragi Keima is known on the net as the "Capturing God" because of his ability to capture the hearts of girls in virtual dating sims. But in real life he’s known as Otamegane and hates all 3D girls, believing them inferior to girls of the game world. After unknowingly signing a contract from hell, Elsee, a devil from Hell who has heard of his legendary girl-capturing skills, comes into Keimas world and tells him about the contract he had made with hell, which is to capture the loose souls who escaped to earth. These spirits only hide in the crevices in womens hearts, and the only way to get them out is to make the host fall in love so that the gap in the heart will be filled. Keima unwillingly accepts the challenge, because if he doesnt, he will lose his head.