Red hair in a pompadour. Red eyes. The youngest member. A bit cheeky but impossible to hate. A hard worker. Cool and cute. Member color: Red. First person: I (casual). Likes: Chicks, fries, singing, clothes. Dislikes: Thrill rides, bugs, vegetables. (Nicknames for members) Hotoke -> Hotokecchi, Shou -> Shou-chan, Naiko -> Nai-kun, If -> Maro, Yusuke -> Aniki.

Light blue hair with purple gradient tips. Two vertical moles near the right eye. Light blue eyes. Always noisy. A cute boy. Member color: Light blue. First person: I (soft). Likes: All sweets, ramen. Dislikes: Carrots, bell peppers. (Nicknames for members) Riura -> Riu-chan, Shou -> Shou-chan, Naiko -> Nai-chan, If -> If-kun, Yusuke -> Aniki.

White hair. Purple eyes. A rap genius. Has a heart on his right cheek with the letters "it" inside. Cute. Speaks with a regional drawl (Kansai). First person: I (casual). Member color: White & Purple. Likes: The members. Dislikes: Haunted houses, crowds. (Nicknames for members) Riura -> Riu-chan, Hotoke -> Imu-kun, Naiko -> Nai-chan, If -> Maro-chan, Yusuke -> Yuu-kun.

Pink hair. Pink eyes. The leader of Ireis. Smart, cute, cool, and handsome, but somehow... disappointing. The straight man of the group. First person: I (casual). Member color: Pink. Likes: Sushi, the members. Dislikes: Tomatoes, avocado. (Nicknames for members) Riura -> Riura, Hotoke -> Hotoke/Hotokecchi, Shou -> Shou/Shou-chan, If -> Maro, Yusuke -> Aniki.

Blue hair. Blue eyes. Occasionally regresses to a childlike state (repeats "poe poe" when doing so). Cool. Lived abroad. Extremely weak to alcohol. Speaks with a regional drawl (Kansai). First person: I (casual, sometimes Maro). Member color: Blue. Likes: Singing, cats, rabbits, snacks, chocolate, skirt steak, hamburgers. Dislikes: Being put on the spot, cleaning up, free-fall rides. (Nicknames for members) Riura -> Riura, Hotoke -> Hotoke, Shou -> Shonida, Naiko -> Naiko-tan/Naiko, Yusuke -> Aniki.

Black hair in a low ponytail with yellow gradient tips. Yellow eyes. A reliable big-brother type. The backbone of Ireis. Respected by the members. Speaks with a regional drawl (Kansai). First person: I (casual). Member color: Black & Yellow. Likes: Singing, muscle training, cooking, cute animals, Poms (Pomeranians). Dislikes: Ghosts, cleaning. (Nicknames for members) Riura -> Riura, Hotoke -> Hotoke, Shou -> Shou, Naiko -> Naiko, If -> Maro.