1. Inasa is 190cm tall, his blood type is B, and he was born in Yamanashi Prefecture. His character profile from volume 12 reveals he likes “hot blood,” and that Horikoshi says his hero costume is very hard to draw.
2. Inasa’s surname Yoarashi contains the kanji for “night” (夜 yo) and “storm” (嵐 arashi). His first name Inasa (イナサ) is written in katakana and therefore doesn’t have an accurate kanji reading, but his name may refer to the strong winds that Japan experiences during typhoon season.
Inasa’s first name could also be a reference to going from east to west in direction, which could be referencing that Inasa initially was planning on going to UA before going to Shiketsu. His name could also reference something called the Coriolis effect, which causes prevailing winds (winds that blow from a single direction over a specific area of the Earth) in the Northern Hemisphere which flows east to west.
3. Inasa’s Japanese voice actor is Ryota Iwasaki, who is also known for his roles as Suruga Hamamatsu in Shinkansen Henkei Robo Shinkalion the Animation and Heishi and Chosa-hei in Attack on Titan.
Inasa’s English voice actor is Matt Shipman, and Matt also voices Mr Brave (the Pro Hero with the Quirk Hair-Raiser with the blue, yellow and red costume), Sen Kaibara (the UA Class 1-B student with the Quirk Gyrate with the white hero costume with the funky grey and blue diagonally striped pants) and Takeshita (the Pro Hero with the green costume whose a former classmate of Danjuro Tobita/Gentle/Gentle Criminal) for My Hero Academia.
Matt is also known for his roles as Chrome in Dr Stone, Floch in Attack on Titan, Kazuma Hokao in 2.43 Seiin Koukou Danshi Volley Bu, Alecdora in Black Clover, Nanatsuki in Tokunana, Nao in Stars Align, Hajime in Arifureta: From Commonplace to World’s Strongest, Takeda in Boogiepop and Others, Greenhorn Warrior in Goblin Slayer, Byakuya in Kakuriyo: Bed & Breakfast for Spirits, Hiro in Darling in the Franxx, Julian Mintz in Legend of the Galactic Heroes: Die Neue These, Teruaki Nagata in Osama Game, Shay Obsidian in Yu-Gi-Oh! Arc-V, and Kazuya Kujo in Gosick.
4. Horikoshi has a previous work called Oumagadoki Zoo. He has a character whose called Isana, which is very similar to Inasa’s name. Isana from Oumagadoki Zoo’s design and personality also ended up being used for the character Curator, featured in My Hero Academia: Clash! Hereos Battle. Isana himself and his personality was also used by Horikoshi has the initial base concept for Overhaul/Kai Chisaki.
5. According to the Ultra Analysis Book, Inasa’s stats are:
Power 5/6 (A)
Speed 5/6 (A-)
Technique 5/6 (A+)
Wits 2/6 (D-)
Vocal Volume 6/6 (S)
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