Festivals (Shiukusai/祝祭) - Higurashi no Naku Koro ni VN OST

This song represents Meakashi-Hen for me and its clearly belongs to Rena and Shion ⁓
This track plays in three scenes. Shion laughs watching Rika commit suicide, when Rena takes the school hostage, Keiichi explains that Rena is beyond human and Rika visits Rena in the night to ask her if she wants the medicine.