Higurashi: When They Cry (2006)

S1E23 The Atonement Chapter - Part 2 - A Place to Return to

Rena kills Rina and her lover Teppei after uncovering their scheme to swindle her father. When her friends find out, they rally around her and assist in concealing the bodies. Yet on the night of the Watanagashi festival, Oishi questions her, leaving Rena uneasy as she suspects he may be onto her.