- Last Dimension-Symphonic Edition-TRIGGER / 加藤達也Vocal8collabMelodious Octave
- Joker FlagIDOLiSH7Vocal4collabMelodious Octave
- RESTART POiNTERIDOLiSH7Vocal12collabMelodious Octave
- 激情Re:vale / Melodious OctaveVocal4collabMelodious Octave
- 【半即合否】和泉三月・四葉環 メンバー募集TOMORROW EViDENCE / IDOLiSH7Not Selected14collabMelodious Octave
- My Friend二階堂大和/Melodious OctaveVocal2collabMelodious Octave
- PARTY TIME TOGETHER -Winter remix-IDOLiSH7 / Melodious OctaveVocal9collabMelodious Octave
- TOMORROW EViDENCEIDOLiSH7Vocal13collabMelodious Octave
- TOMORROW EViDENCEIDOLiSH7Vocal12collabMelodious Octave
- Re-raiseRe:valeVocal5collabMelodious Octave