Yuuka appears (sings/talks) in the following CD singles.

2014 10.22	Elementario de Aimashou (VTCL-35195)	Song
2014 11.22	Blue Emotion (PCCG-70234)	Song/Talk
2014 11.22	Judgement of Yellow (PCCG-70235)	Talk
2014 11.22	Red Braver (PCCG-70233)	Talk
2017 11.08	Hikari Hikari (VTZL-137)	Song