"As a woman from Osaka, I can't lose!"
Aiko Senoo

Aiko Senoo is one of the Main Characters and the third Ojamajo, officially joining the group with Hazuki Fujiwara after they spy on Doremi Harukaze in the Maho-do.

Aiko is from Tengachaya Osaka, who transferred to Misora with her father due to his work. Aiko is known for her distinctive Kansai-dialect and often complains when others imitate it. She has the Osaka comedy routine down and is a very smart bargainer.



Aiko has tan skin and deep blue eyes with short matching hair ending at her shoulders and flipping outward. Her bangs are very short, exposing her forehead with a split on the right, where several tiny curls and a single, larger curl resides.

In the first two seasons, Aiko wore a green T-shirt lined in yellow beneath blue denim overalls, pale brown flats, and socks. Starting with Motto she switched to a plain T-shirt worn beneath a tan vest, and azure denim pants. Her shoes and socks were unchanged.


Aiko is asporty and bold, passionate young girl. She can come off as rough around the edges as a result, and due to her comedic nature, she may sometimes sound rude without trying to be. She isn't good when it comes to learning but she is always up for a brand new challenge. Although she is very humble, she possesses a natural talent and isn't shown having too much trouble doing things, causing others to rely on her for help or advice. 

Although she comes off as tomboyish, Aiko is also very mature and capable of handling things responsibly. She is capable of understanding the aftermath of her decision to stay with her father after her parents split up, and used this to determine who would need her more. She remains realistic and practical and is shown to be motherly towards those she cares for. As such, she has become accustomed to covering up her insecurities and past concerns. She hates to be seen as childish in front of others and tends to get flustered when her facade begins to crack.

She is also regarded as being cool and easy-going, but is known for being the first to crack a joke or give others a rousing pep talk. 

Witch Apprentice

The blue witch apprentice, her fairy is Mimi and her crystal ball is a blue diamond.

Aiko was brought to the Maho-do after witnessing Doremi's magic suddenly disappear. After she and Hazuki were caught spying on her talking to Majorika, they came to the conclusion to make them Apprentice Witches in order to help Doremi keep her secret. Aiko had been highly excited about the prospect of being able to help out her dad and encouraged the others with her salesman spirit as they set up the shop. 

At first, Majorika considered Aiko to be like Doremi, accidentally getting her first spell wrong. But she was the first to learn how to fly properly.


  • Transform: Pretty Witch Aiko-chi!
  • Spell: Pameruku raruku larirori poppun!
  • Magical Stage: Pameruku raruku, Takaraka ni!
  • Patraine: Pameruku patraine!


Aiko has had a difficult past and does not like to talk about it. While she plays it off as nothing she is shown struggling when she is forced to deal with it or when trying to move on.

One day she was playing by herself while her parents were busy. After getting hurt, she was rushed to the Hospital and listened to them argue over it, while she tried to tell them it was her own fault. They would fight a lot since that incident until they agreed on separating. Aiko blamed herself and was going to leave with her mother until realizing her dad would need her more. As such she chose to stay with him.

It also was shown that Aiko's father tried to help her swim during bath time, but she was never able to learn and puts him to blame for it. She also suffered from being terrified of her grandfather, due to his violent ways towards her mother when she was younger.



Aiko accidentally angered her when they first met, but after Doremi got to know her, she came to see Aiko as a good person. They have a close bond and often tease each other.


Aiko is capable of understanding how sensitive Hazuki is, and often encourages her when she feels worried or uncertain of herself. While Aiko is gentle with Hazuki, she also believes in being stern. 


Aiko openly disliked Onpu for being manipulative. But after getting to know her, she became very attached to Onpu. With both of them being level-headed and calm in most cases they are shown to get along and often help one another. Aiko is usually the first to notice if something is off with Onpu and will help her to the extent that she can.


Due to having similarly rough starts with their friends, Aiko was able to help Momoko realize that her upfront criticisms were considered to be rude and helped her make amends with the girls. They both have a sense of humor and get along naturally, although Aiko does express annoyance by some of Momoko's wackier ideas or when she clings to her in fright. 


Aiko adores Hana-chan and could often be found holding her. She learned how to raise a baby with Doremi's mothers help, and she struggled initially out of fear that she may not have cared as much as the others did- despite knowing she did. She is protective over her and sometimes may become too blunt when she scolds other mistakes involving her.


She thinks she is very mature and she loves to tease Doremi about this.

Light Novel Series

Aiko Senoo/Light Novel Series

Magical Doremi

Due to removing culture references, Aiko is now a farm girl who came from a nearby town and was given a slight accent. Her favorite food, Takoyaki, has now become biscuits or cookies. Her parents are still divorced in this version, and her full name is revealed to be Mirabelle P. Haywood. Occasionally, she is called "Mir" by Dorie.

In other dubs

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Character Songs


  • It is rare to find both straps of her overalls worn up.
  • Aiko likes to put her hands in the empty space of her overalls, instead of using the pockets.
  • The characters in Aiko's name are Little Sister Tail, Love Child. (Seno = Little Sister, o = Tail, ai = Love, and Ko = Child).
  • Aiko's last name has been spelled as Seno, Senoh, and Senō.
  • Aiko is the third oldest in the group.
  • She is the first girl to transform without problems.
  • She knows how to play the drums.
  • Aiko was the first Apprentice shown to ride the broom with crossed legs.