Birthday
June 21 1926
Rieko is like any old grandmother of the countryside, kind and gentle. She is also very caring for her granddaughter. At her age, she felt lonely, as her friends and family have moved away or passed away over the years. When Keima confronts Rieko's spirit, he encounters her child-self and her teenage-self.
The World God Only Knows
Keima Katsuragi is an avid galge gamer known at his school as "Otamega" (a derogatory term combining the words Otaku and Megane) and on the internet a "The Capturing God." One day he receives an e-mail offering him a contract to "capture" girls. He accepts thinking it's a challenge and a demon from Hell named Elsee appears. She asks for his help in capturing runaway spirits that are hiding in "real" girls. He refuses stating he only like the girls from the game and she tells him that if he refuses then both of their heads will be cut off.