Story ideas for who ever needs any

Yandere Kiri and Mina

Kiri, Mina, and Bakugou are in a poly relationship and kiri and Mina are yanderes for bakugou and kill anyone he's close to. He finds out about this and starts being colder and more reclusive to those around him. It makes kiri and Mina happy because they get bakugou all to them self, but it's slowly eating away at him and kiri and Mina don't realize until it's to late....