Appears on releases
| # | Title | Length | Track artist | Release title | Country/Date | ||||
|---|---|---|---|---|---|---|---|---|---|
| Official | |||||||||
| 3.18 | 忘却の夏 | 2:02 | じん | MEKAKUCITY M's COMPLETE BOX ～メカクシティアクターズ・ヴォーカル&サウンド コレクション～ |
| ||||
| Pseudo-Release | |||||||||
| 3.18 | Boukyaku no Natsu | 2:02 | Jin | MEKAKUCITY M's COMPLETE BOX ~MEKAKUCITY ACTORS VOCAL & SOUND COLLECTION~ (romaji transliteration) | |||||