Daichi Shiozaki. He speaks with a Wakayama accent and appears kind, but he is actually a master of provocation. A sadist who enjoys seeing faces twisted in pain. He uses a Wakayama dialect. He is good at acting spoiled, but in reality, he is always composed. He is the jokester of the group, but he is actually just as heart-meltingly charming as Hayato.

Hayato Sano. The rowdiest and a natural charmer. The most heart-meltingly attractive. A sadist who loves seeing people suffer, he usually speaks standard Japanese with a Nagoya accent. He's a bit of a scumbag, a fact often pointed out by the other four members of M!LK. He gives everyone the cold shoulder, but that's exactly why he's so popular in class.

Jinto Yoshida. He doesn't seem that rowdy, but he is the biggest sadist of them all. He usually speaks standard Japanese but takes on the leader role with a Kagoshima accent. He believes a face in pain is the most beautiful thing. He is incredibly possessive, and his Kagoshima dialect becomes stronger when he's angry.

Shunta Sono. He is always smiling, but occasionally his eyes look dead. You never know what he's thinking, but he's definitely a delinquent. A sadist. He has a dog-like personality, but it's all calculated to charm people. He is very possessive and keeps smiling even when he is furious.

Jyutaro Yamanaka. It's hard to tell what he's thinking, but he is kind. However, his expression goes dead when he's angry. He speaks standard Japanese and is usually spaced out and cute. He seems like the 'princess' of the group, but he is actually quite possessive.