Seki Tomokazu DVDs/Blurays/videos
Some of the video media (Bluray, DVD, laser disc, VHS tape) that Tomokazu has appeared in are as follows.
| 1996.??.??. | Kidou Senkan Nadesico "Belle Equipe" he Youkoso | Talk |
| 1998.07.05 | Gluhen Tour 1998 (MMVP-1001) | Song |
| 1999.01.06 | Weiss Kreuz kapitel VI (POVV-3225 POLV-3225) | Talk |
| 1999.02.10 | Weiss Kreuz kapitel VII (POVV-3226 POLV-3226) | Talk |
| 1999.03.10 | Weiss Kreuz kapitel VIII (POVV-3227 POLV-3227) | Talk |
| 1999.03.21 | Weiss Kreuz Final Tour (MMVP-1002) | Song |
| 1999.04.25 | Voicelugger vol 1 | Act |
| 1999.05.25 | Voicelugger vol 2 | Act |
| 1999.06.25 | Voicelugger vol 3 | Act |
| 1999.??.?? | Weiss kreuz Gluhen-Das Ewige Dasein (MMBV-1001) | Song |
| 2000.09.27 | Weiss kreuz Verbrechen -Strafe [DVD] (MMBV-1003) | message |
| 2001.04.10 | AX May 2001 [DVD] | talk |
| 2001.06.10 | AX July 2001 [DVD] | Cosmo X interview |
| 2001.08.10 | AX September 2001 [DVD] | talk |
| 2001.09.10 | AX October 2001 [DVD] | talk |
| 2006.03.22 | Neo Romance Live 2005 Winter [DVD] (KEBH-1088) | event |