"Shin Megami Tensei: Persona 4, known in Japan as PERSONA4 (ペルソナ4, Perusona Fō), is a role-playing video game developed and published by Atlus for Sony's PlayStation 2, and chronologically the fifth installment in the Shin Megami Tensei: Persona series. Persona 4 was released in Japan in July 2008, North America in December 2008, and Europe in March 2009. It features a weather forecast system with events happening on foggy days to replace the moon phase system implemented in the previous games.
Instead of the city locales of previous games in the series, Persona 4 takes place in a fictional Japanese countryside and is indirectly related to Shin Megami Tensei: Persona 3 in terms of gameplay and production. The player-named main protagonist is a high-school student who moved into the countryside from the city for a year. During his year-long stay, he becomes involved in investigating mysterious murders while harnessing the power of summoning Persona."
Source: Wikipedia, "Persona_4," available under the CC-BY-SA License.