🎬 animator
Seiji Hagiwara萩原省智
Animation Director and Character Design on Seraph of the End: Vampire Reign, That Time I Got Reincarnated as a Slime Season 2 and Nisekoi.
- anime credits
- 18
- anime credits
- most credited as
- Animation Director
- most credited as
- busiest year (3)
- 2021
- busiest year (3)

Best-known work
Seraph of the End: Vampire ReignAssistant Animation Director · 2015
That Time I Got Reincarnated as a Slime Season 2Animation Director · 2021
NisekoiAnimation Director · 2014
NisemonogatariKey Animation · 2012
Monogatari Series Second SeasonKey Animation · 2013
Little Witch Academia (TV)Animation Director · 2017
TsukimonogatariKey Animation · 2014
The Irregular at Magic High School: Visitor ArcAnimation Director · 2020
Keijo!!!!!!!!Animation Director · 2016
MARS REDAnimation Director · 2021
This Monster Wants to Eat MeAnimation Director · 2025
16bit Sensation: Another LayerAnimation Director · 2023
Credits per year
Anime Seiji Hagiwara worked on, by premiere year
024
3 in 2021
10111213141516171819202122232425
Show as table
| Item | Credits |
|---|---|
| 10 | 1 in 2010 |
| 11 | 1 in 2011 |
| 12 | 1 in 2012 |
| 13 | 1 in 2013 |
| 14 | 2 in 2014 |
| 15 | 1 in 2015 |
| 16 | 1 in 2016 |
| 17 | 1 in 2017 |
| 18 | 0 in 2018 |
| 19 | 1 in 2019 |
| 20 | 3 in 2020 |
| 21 | 3 in 2021 |
| 22 | 0 in 2022 |
| 23 | 1 in 2023 |
| 24 | 0 in 2024 |
| 25 | 1 in 2025 |
All credits
- 2025
This Monster Wants to Eat MeAnimation Director - 2023
16bit Sensation: Another LayerAnimation Director - 2021
That Time I Got Reincarnated as a Slime Season 2Animation Director - 2021
MARS REDAnimation Director - 2021
Azur Lane: Bisoku Zenshin! Hokorashiki Bokou ni Shukusai woAnimation Director, Key Animation - 2020
The Irregular at Magic High School: Visitor ArcAnimation Director - 2020
If My Favorite Pop Idol Made It to the Budokan, I Would DieAnimation Director - 2020
Azur Lane Anime PVsCharacter Design, Chief Animation Director - 2019
Re:Stage! Dream DaysAnimation Director - 2017
Little Witch Academia (TV)Animation Director, Key Animation - 2016
Keijo!!!!!!!!Animation Director - 2015
Seraph of the End: Vampire ReignAssistant Animation Director - 2014
NisekoiAnimation Director - 2014
TsukimonogatariKey Animation - 2013
Monogatari Series Second SeasonKey Animation - 2012
NisemonogatariKey Animation - 2011
Pretty Rhythm: Aurora DreamIn-Betweens Check, Key Animation - 2010
And Yet The Town MovesAnimation Director, Key Animation
Frequently asked questions
What anime has Seiji Hagiwara worked on?
Seiji Hagiwara's best-known work includes Seraph of the End: Vampire Reign (Assistant Animation Director), That Time I Got Reincarnated as a Slime Season 2 (Animation Director), Nisekoi (Animation Director), Nisemonogatari (Key Animation), Monogatari Series Second Season (Key Animation), Little Witch Academia (TV) (Animation Director).
What does Seiji Hagiwara do?
Seiji Hagiwara is credited most often as animation director, character design, key animation on anime.