Miku Usui - As a running gag of the series, every time Chiyo Honjo kills Miku, she comes back to life. Since then her life has become one of bloody clubbings and resurrections. Miku suffers from apiphobia (a fear/dislike of bees) in which she suffers an allergic reaction whenever he comes into contact with one bee. Miku's greatest desire is to become Chiyo's friend instead of being her victim.
Miku has short pink hair. In school, she wears her uniform. On the beach, she wears her green swimsuit. When sleeping, she wears her white shirt and black shorts.
- Throughout the series, Chiyo has also killed and resurrected Miku at least a lot of times in each:
- On DAY 1, Chiyo smashes Miku's head off and later she punches Miku, causing her to bleed to death.
- On DAY 2, Chiyo tries to fry Miku in cooking class and later she hangs her on the tree.
- On DAY 3, Chiyo put Miku in a cage until night and later she drowns Miku.
- On DAY 4, Chiyo throws an arrow on Miku's forehead (bleeding) and then freezes her to death.
- On DAY 5, Chiyo smashes Miku's head off and later she punches Miku, causing her to bleed to death.
- On DAY 6, Chiyo hangs Miku and tries to slice her.
- On DAY 7, Chiyo put Miku in a cage until night.
- On DAY 8, Chiyo throws Miku off the cliff and later puts her into the desert to die.
- On DAY 9, Chiyo smashes Miku's head off and later she punches Miku, causing her to bleed to death.
- On DAY 10, Chiyo zaps Miku with her taser and later she puts her in jail.
- On DAY 11, Chiyo put Miku in the ocean to drown and die.
- On DAY 12, Chiyo no longer kills Miku. But in the end, she tries to kill her one last time.