The Rental Magica light novel is special for its unique blend of magic and modern settings. It presents a world where magic is a service that can be rented, which is quite an interesting concept. The characters are diverse and well - developed, each with their own motives and backstories within this magical service industry.
One of the main characters is Itsuki Iba. He is an important figure in the Rental Magica world as he takes on the role of managing the magic rental business.
The popularity of the rental magician depended on different factors such as the genre of the novel, the plot, the characters, and the personal preferences of the readers. Renting out magicians is a very popular plot in certain types of novels such as fantasy or science fiction. In these novels, renting a magician could be a plot that provided additional adventure and excitement.
However, in other types of novels, renting out magicians may not be very popular and may even be considered boring or lengthy. Therefore, it was a relatively complicated problem for the popularity of the rental magicians to be evaluated according to different reader groups and novel types.
I think there are several, but the exact number might change as new ones could be released. You might want to check reliable manga databases or official sources for the most accurate count.
A rental friendly story could be a story about a tenant who has a great experience in a rental property. For example, a tenant finds an apartment where the landlord is very understanding. The tenant is allowed to paint the walls a different color as long as they repaint it back when they leave. This makes the tenant feel at home and creates a positive rental story.