a story about terrible people, but not like in a human way but like a disappointing way. All the action here is real but it's so very thin and impersonal that this doesn't seem like the relationships between people.
Yandere except spurned girl uses her box as the weapon.
Actually a couple getting together because they both love someone else is rather realistic. I've seen it IRL. As to whether it makes a satisfying story to read? Well . . .