Sonosuke Izayoi is known as the Former Super High School Level Blacksmith. He attended Hopes Peak Academy in the 76th class, but was expelled before he could graduate. He appears to be around 24 at this time. Sonosuke is the 6th victim in the previous killing game, but everything could change here.

Izayoi is said to be a silent type who avoids talking to others. The exception to this is his girlfriend, Ruruka Andou. He is very loyal to her, and will attack anyone who tries to get near her. Despite being calm and serious most of the time, he says "dewicious" rather than "delicious". Once his trust is broken, it is difficult to get it back, as he believes that you can't change your nature.

Sonosuke should have a bit of a softer voice, in the medium to medium low range for a male. However, he is prone to getting angry, so you may have to shout. He's overall a fairly static character, so you will have to show some emotions, but not a whole lot.