What are some common plots in the 'little girl summons demon story'?

One possible plot could be that the little girl summons the demon by accident while playing with an old book she found. Maybe she was just curious and recited some strange words in the book not knowing what they really meant.

There could be a wise old mentor figure. This person might be aware of the girl's actions or the existence of demons in general. They could try to guide the girl, either to stop her from summoning the demon in the first place or to help her once the demon is there.

A local witch or wizard could be a main character. They sense the presence of the demon and come to help the girl. They might have their own motives, like they want to use the demon for their own gain or they truly want to save the girl from the demon's clutches.

One plot could be that Hannah finds a lost puppy. She takes care of it and tries to find its owner. Along the way, she meets different people in her neighborhood and has all kinds of small adventures.

Perhaps Audrey has a special gift, like being able to talk to animals. In the story, she uses this gift to help solve a mystery in her village. For example, the village's crops are being damaged and no one knows why. Audrey talks to the animals and finds out that there is a group of wild rabbits that are lost and accidentally eating the crops. So she helps the rabbits find their way back home, saving the village's harvest. This could be a great plot for the 'Audrey little girl story'.

Often, a 'forced to be a girl story' might start with a situation where a male character is in a desperate situation. For instance, he might be hiding from some bad guys and the only way to do so is to disguise as a girl. He then has to adapt to the new identity. He has to learn how to walk, talk, and act like a girl. This transformation not only changes his outward appearance but also his understanding of the opposite gender, leading to character growth and interesting interactions with other characters in the story.

Yes, it's possible. In many fanfictions, the main character has to find a way to control whatever they summon. Harry, being a powerful wizard in the original series, might use his magic skills and knowledge to control the demon. He could use spells or magical objects to keep the demon in check.

One possible plot is that the little girl is lost in a forest. But she bravely uses her knowledge of nature to find her way out. She might look for a stream and follow it downstream until she reaches safety.

A plot could be centered around Shirou summoning Morgan to help him in a magical tournament. Morgan, being a powerful figure, has her own motives for participating. Along the way, Shirou discovers that Morgan has a connection to his past that he was unaware of. As they compete in the tournament, they face opponents who force them to work together and rely on each other's strengths, leading to a deeper understanding between them.

One common plot is a magical spell or curse that turns the boy into a girl. For example, in some fairy tales, an evil witch might cast a spell on a boy as a form of punishment or to disrupt his normal life.