Underground Reservoir

The watery underground area of the Aria of Sorrow series.Most of the area can be accessible by gaining the Skula soul,which makes Soma walk underwater.The area is connected by the Castle Corridor,Underground Cemetery and The Arena.

Many of the enemies here are water-borne.The area is the also the only place to spot the Sky Fish.The following are the enemies that can be found in the area:Bat,Skeleton,Tiny Devil,Killer Fish,Merman,Needles,Man-Eater,Cagnazzo,Ukoback,Medusa Head,Gorgon,Imp,Triton,Fish Head,Giant Worm,Gargoyle,Arc Demon,Poison Worm,Dead Crusader and Dryad.

Like the Floating Garden,the Underground Reservoir doesn't contain a boss.There is,however,a room where Soma witnesses a cutscene wherein Graham stabs Yoko Belnades.Graham retreats,and Soma rushes to Yoko.Yoko thanks him for rescuing her,and Genya Arikado rushes to the scene and tells Soma to go forth.He said that he'll see Yoko's wounds.When the player goes back to the area,Yoko and Genya are gone.