Keita Hagiwara is a Japanese animator who works for OLM since sometime in either later 2018 or early 2019 or more specifically since episode 132 of Pocket Monsters Sun & Moon.

For the Pocket Monsters TV anime, he currently is a regular animation director and key animator as well as before graduating to be that also an in-between animator.

His Twitter account can be found under @kk_ttpkf (formerly @Spit_fire_K).

Role	Media	Title
Key Animation	OPED	ドキメキダイアリー Thrillciting Diary
Key Animation	OPED	ハロ Halo
Key Animation	OPED	Will
Key Animation	OPED	Only One Story
Key Animation	OPED	GET BACK
In-Between Animation OLM Digital	SM 132	Overcome Junaiper!   ジュナイパーを攻略せよ！   Imitation Is the Sincerest Form of Strategy!
In-Between Animation OLM Digital	SM 133	A Birdacious Battle! Brave Bird VS Sky Attack!!   鳥上決戦！ブレイブバードVSゴッドバード！！   Battling on the Wing!
In-Between Animation OLM Digital	SM 136	Rising Fire! More Than One Rival!!   燃え上がる炎！ライバルはひとりじゃない！！   Getting Down to the Ire!
In-Between Animation OLM Digital	SM 137	Guzma the Undefeated!   無敗の帝王グズマ！   The Wisdom Not to Run!
In-Between Animation OLM Digital	SM 139	He's Born! The Alolan League Winner!!   誕生！アローラの覇者！！   Enter the Champion!
In-Between Animation OLM Digital	SM 141	Final Battle! Satoshi VS Kukui!!   ファイナルバトル！サトシ対ククイ！！   Exhibition Unmasked!
In-Between Animation OLM Digital	SM 143	Conclusion! Gaogaen VS Nyaheat!!   決着！ガオガエンVSニャヒート！！   Fiery Surprises!
In-Between Animation OLM Digital	SM 144	The Greatest Z in Alola! Kapu-Kokeko VS Pikachu!!   アローラ最強のZ！カプ・コケコVSピカチュウ！！   From Z to Shining Z!
Key Animation	PM2019 129	The Finals I: Torrent   ファイナルI・“激流"   A Flood of Torrential Gains!
Key Animation	PM2019 147	The Rainbow and the Pokémon Master!   虹とポケモンマスター！   The Rainbow and the Pokémon Master!
Key Animation	PM2023 1	The Pendant It All Started With, Part 1   はじまりのペンダント　前編   The Pendant That Starts It All: Part One
Key Animation	PM2023 2	The Pendant It All Started With, Part 2   はじまりのペンダント　後編   The Pendant That Starts It All: Part Two
Segment Key Animation	PM2023 3	As Long As I'm With Nyahoja   ニャオハとなら、きっと   For Sure! Cause Sprigatito's with Me!
Segment Key Animation	PM2023 4	The Treasure That Washed Ashore   ながれついた宝もの   The Treasure After the Storm!
Key Animation 萩原慶太	PM2023 7	Training! Captain Pikachu   特訓! キャプテンピカチュウ   Special Training with Cap!
Key Animation	PM2023 12	The Future I Choose   わたしが選ぶ未来   The Future I Choose
Animation Director	PM2023 14	Fly, Kaiden!!   とべ！カイデン！！   Fly! Wattrel!!
Guest Setting	PM2023 16	As Long As I'm With Kuwassu   クワッスとなら、できるよ   Quaxly, We Can Do It
Key Animation	PM2023 17	Kaiden and Hogator: Secret Training!   カイデンとホゲータ 秘密の大特訓！   Special Training Time!
Guest Setting 萩原慶太	PM2023 19	The Truth About Mawhip   マホイップのホント   The Bittersweet Truth
Animation Director 萩原慶太	PM2023 20	Kabu-san's Battle Training   カブさんのバトル修行   Kabu's Battle Training!
Key Animation	PM2023 20	Kabu-san's Battle Training   カブさんのバトル修行   Kabu's Battle Training!
Animation Director	PM2023 25	Rivals in the Moonless Night   闇夜の強敵   Rivals in the Dark of Night!
Animation Director	PM2023 30	The Mystery Pokémon Behind the Slipping and Clanging?!   ズル～っとガチャンで謎ポケモン！？   Slip and Crash! A Mystery Pokémon?!
Guest Setting	PM2023 35	A Duo in the Wilderness: Friede and Cap   荒野のふたり フリードとキャップ   The Wild Pair, Friede and Cap!
Animation Director	PM2023 37	Hogator Becomes a Bad Boy?!   ホゲータ、ワルになる！？   Fuecoco...Becomes a Crook?!
Guest Setting	PM2023 40	Farewell, Nyahoja?   さよなら、ニャオハ？   Farewell, Sprigatito?
Animation Director	PM2023 43	A Letter of Challenge from the Explorers   エクスプローラーズからの果たし状   A Challenge from the Explorers
Key Animation	PM2023 43	A Letter of Challenge from the Explorers   エクスプローラーズからの果たし状   A Challenge from the Explorers
Animation Director	PM2023 50	Terastallize for Social Media! Dance Dance Kuwassu!!   映えろテラスタル！ダンス・ダンス・クワッス！！   Trending Terastallisation! Dance, Dance, Quaxly!
Guest Setting	PM2023 54	The Eternal Blessing   永遠のめぐみ   The Treasure of Eternity
Animation Director	PM2023 56	Liko VS Chili! At the End of the Battle   リコVSチリ！バトルの先に   Liko VS. Rika! Toward the Battle's End
Key Animation	PM2023 56	Liko VS Chili! At the End of the Battle   リコVSチリ！バトルの先に   Liko VS. Rika! Toward the Battle's End
Guest Setting	PM2023 59	Dance, Kuwassu! Dance the Blue Chanpuru Dance!!   おどれクワッス！碧きチャンプルステップ！！   Dance, Quaxly! The Blue Medali Step!
Animation Director	PM2023 61	Resound, My Soul! Challenging Lime   響け魂！ライムへの挑戦   Resonating Spirits in a Challenge to Ryme!
Animation Director	PM2023 65	Liko and Amethio   リコとアメジオ   Liko and Amethio
Animation Director	PM2023 67	Shine, Terastallization! Liko VS Roy!!   輝けテラスタル！リコVSロイ！！   Shine on, Terastallization! Liko vs. Roy!
Key Animation	PM2023 73	Basagiri the Lone Warrior!   孤高の戦士バサギリ！   Kleavor the Solitary Warrior
Animation Director	PM2023 73	Basagiri the Lone Warrior!   孤高の戦士バサギリ！   Kleavor the Solitary Warrior
Animation Director	PM2023 78	A Fierce Fight Against Entei! The Noble Roar of Flame!!   激闘エンテイ！炎のおたけび！！   Entei's Fierce Battle Cry!
Animation Director	PM2023 81	A Grand Battle! Earth-Gouging Fire   大バトル！大地を穿つ炎   The Pillar of Fire
Animation Director	PM2023 83	The Truth Revealed? Amethio's Resolve!   明かされる真実？アメジオの決意！   The Truth Revealed
Guest Setting	PM2023 84	The Place Where Heaven and Earth Meet   天と地が出会う処   Where the Land Meets the Sky
Animation Director	PM2023 89	At the End of the Adventure   冒険の先に   Where the Adventure Leads
Guest Setting	PM2023 89	At the End of the Adventure   冒険の先に   Where the Adventure Leads
Key Animation	PM2023 89	At the End of the Adventure   冒険の先に   Where the Adventure Leads
Animation Director	PM2023 94	The Pokémon Center Lady   ポケモンセンターのお姉さん
Key Animation	PM2023 94	The Pokémon Center Lady   ポケモンセンターのお姉さん
Key Animation	PM2023 104	Carbou's Wish   カルボウの願い