E-Rai is the collective name for Lee Hayan, Hayate, Ugo, Palchil, and Nang-sud. They swear at each other and play a lot of pranks, but in reality, they care for each other deeply.

Gender: Male Height: 182cm Traits: Uses polite speech even with the members. Enjoys exercising. Calm and mature, but once excited, he panics easily and becomes talkative. He eats well but hates vegetables very, very, very much. He is a good drinker but tries not to drink too much.

Gender: Male Height: 181cm Traits: The mood maker. He plays the most pranks and has a cheerful, laughing personality. He has learned boxing and is very extroverted and fearless. He is talkative and very active. A total madman. Extremely curious. He drinks well and tends to drink a lot.

Gender: Male Height: 177cm Traits: Very fearful. Introverted, but becomes talkative among close friends. He looks picky but is actually quite sensitive. Enjoys exercising. Has a good voice. He is the only one with a driver's license, so he is the driver for E-Rai. He drinks a fair amount but doesn't go out of his way to drink a lot.

Gender: Female Height: 158cm Traits: The second most fearful after Palchil. Tends to be introverted, but when with close friends, she talks quite a bit, uses rough language, and plays many pranks. She enjoys teasing others, but she is still kind and cute. Loves desserts. A very poor drinker.

Gender: Male Height: 173cm Traits: Often gets teased and picked on by his friends. The punching bag and the youngest position. He tries to talk a lot but stammers a bit; he is simple and lacks tact, but he is fundamentally kind and surprisingly quick-witted. A very poor drinker.