I have a cushion futamata and would like to put something soft underneath the cover. I was debating between the zurrite chichifueta or the real body kiwami namachichi fantasy for preorder but I'm open to other possibilities as long as it's big and won't rip easily/securable with a tube top. I've read there's possibility of silicon leaking/damage to the pillow? Also anybody try to fit an ass toy in a dakimakura?