Slider Shell-HapinessSlider Shell Hapiness Slider Shell Hapiness is ZERO ONE's first linked product, representing a successful cooperation between ZERO ONE and Jianfeng Studio. On the front of Slider Shell Hapiness is the logo of Jianfeng Studio, the traditional Chinese character "", which means happiness. The back is engraved to look like an old game console, representing the simple joy of youth. TIP: All Slider Shells need to be matched with the Slider Core before they