Stardom Grows Up Star 2015 - Night 6 took place at the Koga Gymnasium in Ibaraki, Japan. The event took place on April 29, 2015.
- Numbers in parentheses indicate the length of the match.
- (c) refers to the champion(s) heading into the match.
- Star Fire defeated Momo Watanabe (6:59)
- Kagetsu defeated Hatsuhinode Kamen (9:20)
- Chelsea defeated Thunder Rosa (8:15)
- Dump Matsumoto & Kris Wolf defeated DASH Chisako & Haruka Kato (7:58)
- Kris Wolf defeated Chelsea, DASH Chisako, Dump Matsumoto, Haruka Kato, Hatsuhinode Kamen, Kagetsu, Momo Watanabe, Star Fire, and Thunder Rosa in a Ten Man Battle Royal(12:00)
- Io Shirai, Mayu Iwatani & Reo Hazuki defeated Kairi Hojo, Kaori Yoneyama & Koguma (21:49)