Sumomomo Momomo - The Strongest Bride on Earth S01 E14 The Love Chaos in the Haunted House

A girl, thought to be dead due to an accident at the school's cultural festival decades previous, has resurfaced. It is rumored that she died before she got a chance to confess her love to Kōshi's father. Kōshi hence agrees to date the girl so that she can peacefully rest in heaven.