Anrina has reddish-brown spiky hair, bushy eyebrows, and brown eyes.
His everyday outfit consists of a yellow shirt with black stripes, a darker yellow long sleeved shirt, cream-colored pants, and red sneakers. When he was younger he also wore a yellow shirt, but his pants were dark blue instead of cream.
He is quite energetic and determined. Anrima also gets embarrassed easily.
After attempting to defend Aiko from some bullies he promises her that they will get married when they grow up.
"I've come to take ya home, Aiko!"
- He moved to Hokkaido when he and Aiko were in the first grade, ever since then he was trying to find her.