Sakurazaka46 13th Single "Unhappy birthday Koubun" One new, unopened copy and one new, opened copy, both unused! I hope that those who love Sakurazaka and those who are just starting to like them will buy these! This song has Murai Yu, a third-generation member, as the center, and the world view is amazing, so please give it a listen!! As a bonus, I will give a Sakurazaka fourth-generation clear file or acrylic stand to those who purchase! Group Name: Sakurazaka46