Higurashi no Naku Koro ni: Hirukowashi-hen

This story is set in a parallel world and centers on Keiichi Maebara and Rika Furude. During one of her treasure hunts, Rena accidentally swallows an object. Rika believes this item is part of the sacred "Fuwarazu Magatama" pair, and its seal has been broken. These magatamas possess mysterious magical powers; those with the red magatama will experience an uncontrollable love for anyone who possesses the white magatama.