Well, as for whether Tsumiki gets with Io in the manga, the answer is no. The story takes a different direction for their relationship, leaving it open-ended and full of possibilities.
One possible plot could be that they face unexpected pregnancy. They initially panic but then slowly embrace the idea. Natsume becomes over - protective of Mikan, and they have to deal with the reactions of their friends and family. Maybe they decide to move to a quiet place to start their new family life.
You can try some well - known fanfic websites like Archive of Our Own (AO3). It has a large collection of various fanfics, and there's a good chance you'll find 'rito x mikan fanfic' there. Just use the search function on the site.
There could be a 'rito x mikan fanfic' that focuses on their friendship first. They start as just acquaintances and gradually become really close friends. They share secrets, have fun at school or in their neighborhood, and then slowly feelings of something more start to develop between them. For example, they might realize they like spending time together more than with anyone else.
The father could be a new character introduced specifically for the fanfic. This new character could be from a different background or have some unique qualities. He might have come into Mikan's life unexpectedly and their relationship developed quickly, leading to the pregnancy.
Yes, there are likely non - adult 'mikan x reader' fanfictions out there. You can start by looking on general fanfiction platforms like Archive of Our Own. Just use the search terms'mikan x reader' and then filter out any stories that are marked as mature or containing adult content.
Their relationship would likely become more intimate and closer. Natsume would be more caring and gentle towards Mikan due to her pregnancy. He would constantly worry about her well - being.
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