Birthday: January 23, 2005 (Aquarius) 
Height: 171 cm 
Age: 14
Kouichi is a junior-high school student who dreams of being a hero someday. One day he encounters an accident in which a gigantic humanoid called &ldquo;LINEBARREL&rdquo; falls right out of the sky. He subsequently becomes what people refer to as a &ldquo;Factor&rdquo;, a pilot of the mecha whose life goes hand-in-hand with the life of the mecha he pilots.  Kouichi obtains extraordinary physical strength as a result of becoming a Factor. This drastic change gives Kouichi excessive confidence, making him arrogant and aggressive.

Fourteen-year-old Kouichi Hayase&rsquo;s life has always been a mediocre one, if not dismal. However, those days of being bullied by classmates and escaping to a fantasy of being a hero are put to an end when a certain &ldquo;accident&rdquo; bestows on him a girl and a gigantic humanoid robot called &ldquo;LINEBARREL&rdquo;. The extraordinary power that Kouichi obtains puts him and everything around him on a sudden rollercoaster ride of battles, intrigues and friendship! During the course of his adventure, the boy starts to learn what life has to offer; he meets new friends, bids farewell to the old ones, but most of all he now has considerable responsibilities and is forced to confront the world around him.<br><br>
(Source: Official site)

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Commonly referred to as Kakkii by fans, Kakihara is a voice actor and a singer. As the latter, he is a member of Kiramune (music label) and represents the color of green. He was inspired to become a voice actor by [Yuuji Ueda](https://anilist.co/staff/95058/Yuuji-Ueda)'s performance in the Tokimeki Memorial dating sim game, and moved from Germany to Japan at age 18 to pursue his dream.

Kakihara speaks Japanese, English and German.

**Non-anime roles:**
- Wanderer - Genshin Impact (VG)
- Lloyd Bannings - The Legend of Heroes Series (VG)
-Asaba Harumasa - Zenless Zone Zero (VG)

The Linebarrels of Iron story takes place in a fictional alternate future, centering on a junior-high school student named Kouichi Hayase, who escaped his daily life of being bullied as a child by daydreaming about being a hero. His life was forever changed during a class trip in the year 2016 when an artificial satellite fell from orbit. Due to this "accident", Kouichi was left in a coma for half a year, and upon awakening, found himself with strange powers, including superhuman strength.<br><br>
(Source: Wikipedia)

Episodes 25 and 26 included with the DVD.