He has graduated from Japan University department of Arts and Theater, Film Studies Scenario Writing course. In 2002, Yuji Kobayashi started working as a writer and wrote an anime, “Sazae San”. After, Yuji Kobayashi writes scripts for Tokusatsu, Anime and novelized products while writing scripts for dramas. He is also a part time teacher of Japan University department of Arts and Theater.
| Episode |
失格紋の最強賢者 最強賢者、仲間を得る。 |
2022 |
| Episode |
牙狼 時計 |
2005 |
| Episode |
ウルトラマン 土塊の魔王 |
2016 |
| Episode |
牙狼 水槽 |
2006 |
| Episode |
失格紋の最強賢者 最強賢者、街を救う。 |
2022 |
| Episode |
失格紋の最強賢者 最強賢者、決闘する。 |
2022 |
| Episode |
牙狼 界符 |
2006 |
| Episode |
メタルヒーロー Unknown |
2012 |
| Episode |
牙狼 晩餐 |
2005 |
| Episode |
牙狼 黒炎 |
2006 |
| Episode |
牙狼 生命 |
2006 |
| Movie | Ultra Zero Fight | 2012 |
| Movie | Space Sheriff Gavan: The Movie | 2012 |
| Episode |
牙狼 少女 |
2006 |
| Episode |
ウルトラマン ウルトラマンギンガS 决戦！ウルトラ10勇士！！ |
2015 |
| Episode |
ウルトラマン Dream |
2007 |
| Episode |
牙狼 魔弾 |
2006 |
| Episode |
Ultra Q Dark Fantasy Love Through A Lens |
2004 |
| Movie | The Parasite Doctor Suzune: Genesis | 2011 |
| Episode |
牙狼 刻印 |
2006 |
| Episode |
Ultra Q Dark Fantasy The Door To Nothingness |
2004 |
| Episode |
ウルトラマン Unknown |
2007 |
| Episode |
Ultraman Zero: The Chronicle Mega Monster Battle: Ultra Galaxy Legend |
2009 |
| Episode |
牙狼 絵本 |
2005 |
| Episode |
ウルトラマン Unknown |
2007 |
| Episode |
ウルトラマン Unknown |
2007 |
| Episode |
牙狼-GARO- 〜MAKAISENKI〜 仙水 |
2011 |
| Episode |
ウルトラマン Unknown |
2007 |
| Episode |
ウルトラマン ウルトラゼロファイト-新たなる力 |
2012 |
| Episode |
ウルトラマン 重复 |
2012 |
| Episode |
牙狼 赤酒 |
2006 |
| Episode |
牙狼 心滅 |
2006 |
| Episode |
Ultraman Zero: The Chronicle Ultra Zero Fight Stage I: A New Power (Part 1) |
1970 |
| Episode |
牙狼 英霊 |
2006 |
| Episode |
Ultraman Zero: The Chronicle Ultra Zero Fight Stage I: A New Power (Part 2) |
1970 |
| Episode |
ウルトラマンZ 獅子の声 |
2020 |
| Episode |
宇宙刑事ギャバン 宇宙刑事ギャバン THE MOVIE |
2012 |
| Episode |
ウルトラマンZ 想い、その先に |
2020 |
| Episode |
牙狼 仙水 |
2012 |
| Movie | The Parasite Doctor Suzune: Evolution | 2011 |
| Episode |
牙狼 月光 |
2005 |
| Episode |
牙狼 指輪 |
2005 |
| Movie | Ultraman Ginga S the Movie: Showdown! The 10 Ultra Warriors! | 2015 |
| Episode |
ウルトラマンZ 神秘の力 |
2020 |
| Episode |
牙狼 試練 |
2005 |
| Episode |
牙狼 人形 |
2005 |
| Episode |
牙狼 陰我 |
2005 |
| Episode |
牙狼 悪夢 |
2006 |
| Episode |
牙狼 偶像 |
2006 |
| Movie | Ultra Zero Fight | 2012 |