Shalala! Yareru Hazu sa / Ee ja nai ka Ninja nai ka (シャララ！やれるはずさ／エエジャナイカ ニンジャナイカ; Shalala! You Can Do It / Who Cares? Don't Ninjas?) (song order TBD) is Kobushi Factory's 4th single. It will be released on June 14, 2017 in 5 editions: 2 regular and 3 limited. The first press of the limited editions include a random trading card of 9 kinds depending on the jacket (27 total). The limited editions include an event lottery serial number card.