Seok-Sun Jeong is a student of First Private High and also an A-rank Dicer. He's dating Na-Ni Kim. He became a Dicer to cure Na-Ni's cancer. He would do quests to obtain dice to increase Na-Ni's HP, trying to keep her alive, he found himself being forced to commit arson and murder for her. He joins Dong-Tae in fighting X, but soon afterwards he gets killed during the battle. After Dong-Tae succeeds in obtaining the final die, he is able to bring Seok-Sun back to life, and grants his wish of curing Na-Ni of cancer.
