I signed up for Yume Twins in May, 2017. The May box had a cat theme with lots of cute (but ultimately "cheap feeling") plushies. As a cat lover, and kawaii collector, it was too good to pass up.
I took a lot of pictures as I unpacked my May 2017 Yume Twins box. Facebook assembled this slide show for me from some of the pics I took. This gives you a good idea of the size, variety, and quality of the items inside the May Yume Twins box.