| Artist name | Roles | Recordings |
|---|---|---|
| 大久保薫 | arranger | Baby universe day, Baby universe day (off vocal) |
| 黒須克彦 | arranger | Day×Day, Day×Day (off vocal) |
| Artist name | Roles | Recordings |
|---|---|---|
| 大久保薫 | arranger | Baby universe day, Baby universe day (off vocal) |
| 黒須克彦 | arranger | Day×Day, Day×Day (off vocal) |
| Artist name | Roles | Recordings |
|---|---|---|
| 大久保薫 | arranger | Baby universe day, Baby universe day (off vocal) |
| 黒須克彦 | arranger | Day×Day, Day×Day (off vocal) |