Seiichiro Yamashita
Voice ActorSeiichiro Yamashita hails from Fukuyama in Hiroshima Prefecture and works as a Japanese voice actor, playing Toru Ishikawa, Miyamura's easygoing best friend, in the CloverWorks series Horimiya.
Horimiya Role
Yamashita voices Toru Ishikawa, one of the core friend group at Katagiri Senior High and Izumi Miyamura's closest male friend. Ishikawa starts the series with a quick temper and some jealousy issues, and Yamashita's performance tracks his gradual shift into a more relaxed, joke-cracking teammate who reads the room for his friends. Much of Ishikawa's arc plays out through his shifting feelings, first for Kyoko Hori and later for Yuki Yoshikawa, and Yamashita voices both the lighter comic beats and the more sincere moments that come with it.
Career and Notable Roles
Yamashita has voiced anime since 2012 and is represented by Office Osawa. Beyond Horimiya, fans know him for Kakeru Naruse in Orange, Cid Kagenou in The Eminence in Shadow, and Takahiro Mizuno in Walkure Romanze, roles that show off both his dramatic and comedic range.
Related Reading
See all
Naruto vs Luffy: Does the Fight Change if Luffy Tickles Hinata?
Naruto vs Luffy with the twist nobody asked for: Luffy tickled Hinata on date night, and she kind of liked it. We break down the whole fight and commit to a winner....
Namek Has No Women, and Piccolo Pulls Anyway
There are no women on Namek. That isn't an oversight, it's the biology. Why we handed Piccolo the one thing his own species rules out, and why it had to be trap soul....
Frequently Asked Questions
Who does Seiichiro Yamashita voice in Horimiya?
Seiichiro Yamashita voices Toru Ishikawa, one of the core friend group at Katagiri Senior High and Izumi Miyamura's closest male friend. Ishikawa starts the series with a quick temper and some jealousy issues.
How does Toru Ishikawa's character develop in Horimiya?
Yamashita's performance tracks Ishikawa's gradual shift from a jealous, quick-tempered teen into a more relaxed, joke-cracking teammate who reads the room for his friends. Much of the arc plays out through Ishikawa's shifting feelings, first for Kyoko Hori and later for Yuki Yoshikawa.
Where is Seiichiro Yamashita from?
Seiichiro Yamashita hails from Fukuyama in Hiroshima Prefecture, Japan. He is represented by the talent agency Office Osawa.
What other anime has Seiichiro Yamashita voiced?
Yamashita's other credits include Kakeru Naruse in Orange, Cid Kagenou in The Eminence in Shadow, and Takahiro Mizuno in Walkure Romanze.
When did Seiichiro Yamashita start voice acting?
Yamashita has voiced anime since 2012, a career now spanning more than a decade across a wide range of anime roles.
Sources & Information
This content is original writing by Daddy Jim Headquarters based on the Horimiya anime series, manga, and official materials. Horimiya was created by HERO and Daisuke Hagiwara, published by Square Enix, and animated by CloverWorks. All rights to Horimiya and its characters belong to their respective owners. Episode and chapter references are cited where applicable.
Rights holders
- Created byHERO and Daisuke Hagiwara
- Published bySquare Enix
- Animated byCloverWorks
All rights belong to their respective owners.
Character and scene imagery on this site is original artwork by Daddy Jim Headquarters, not screenshots or licensed imagery. Official cover art is used on three types of pages for editorial commentary:
- Movie pages: theatrical posters and key visuals, credited to CloverWorks and Square Enix.
- Game pages: official box art, credited to the game's respective publishers.
- Manga chapter pages: volume covers, credited to Square Enix and HERO and Daisuke Hagiwara.
Official resources:
Help Us Keep This Wiki Accurate
Daddy Jim Headquarters maintains this encyclopedia. If you spot an error, a translation issue, or something that doesn't look right, let us know.
