"思春期コンプレックス" (Shishunki Complex / Puberty Complex) is a compilation album by the circle Yasashii Hito ni Naritai. It contains 6 tracks, sung by Hatsune Miku, Kagamine Rin, GUMI and Yuzuki Yukari. Mastering was done by Tomodachi Boshuu-P. It was first released at THE VOC@LOiD 超 M@STER 24. A crossfade of the album can be heard on Nico Nico Douga. The official album website is available here.