This unexpected sleeper hit took the JRPG world by storm in 2008. Shin Megami Tensei: Persona 3 (or just Persona 3 for short) revolves around unlocking the secrets of the Dark Hour, a time period that begins before one day ends and another begins. To prevent its shadows from feasting on human minds, local high-schoolers (including the silent protagonist named by the player) must summon Personas, or manifestations of their spirits, to combat them. Since this is high school, you can also expect some platonic/romantic hijinks.
There has yet to be any HD updates of Persona 3 or its sequel, Persona 4. Perhaps Atlus would be kind enough to bundle the Persona 3 FES, which was something of a director's cut.