Well, perhaps it could be about a neko girl who starts leading a very lazy lifestyle. She eats a lot of junk food and doesn't exercise. As a result, she begins to gain weight. Maybe she then has to deal with things like fitting into her old clothes or being teased by others, but eventually learns to embrace herself and make positive changes.
There could be her friends. For example, a more health - conscious friend who tries to encourage her to change her slobbish ways. Or a friend who is also a bit of a foodie and sometimes enables her bad eating habits.
Well, it could be about a character in High School DxD who starts overeating due to some emotional turmoil, like being bullied or stressed about schoolwork. As they keep indulging in junk food, they gradually gain weight and become a slob. Their appearance and new lifestyle might cause changes in their relationships, for example, some friends might distance themselves while others might try to help them get back on track.
One reason is the lack of physical activity. Gaming often involves sitting for long periods. Another is poor diet choices. She might choose easy - to - eat junk food while gaming.
Well, it could be about a Pokemon girl who has a change in her lifestyle. Maybe she starts to eat more of the delicious Pokemon - themed treats like Poke - puffs. As she consumes more, she gradually gains weight. For example, she might be so into the new Miltank milk - based desserts that she can't resist and starts to put on pounds.
Well, it could be about a girl in the Naruto universe who, perhaps due to a change in her lifestyle like eating more because she discovers some really delicious new foods in the Hidden Leaf Village. For example, she might find a new love for the ramen there and starts having it every day, which gradually leads to weight gain.
In a cat girl weight gain story, perhaps she has a magical encounter. A spell makes her have an insatiable appetite. She eats everything she can find. Her weight gain becomes quite noticeable. She then embarks on a journey to find a way to reverse it, meeting various interesting characters along the way.
Rias could also be the main character in such a story. Imagine if she goes through some sort of magical accident that makes her gain weight. As a high - status devil, this would be a huge blow to her self - image. She might become a slob as she struggles to come to terms with her new body, and it could be interesting to see how she tries to regain her confidence and status within the school and the devil society.
Another theme is the journey of change. They usually have to overcome their bad habits. This could involve things like learning self - control and starting to exercise. It's a process of transformation from being a slob to a more healthy and confident individual.
A gamer girl who is an extreme slob might gain weight due to her sedentary lifestyle. She could be so engrossed in gaming that she forgets to take care of herself. For example, she might constantly snack on junk food while gaming and rarely exercise. This lack of physical activity combined with a poor diet would lead to gradual weight gain over time.
One reason could be a change in lifestyle. For example, if she used to be very active in the goth club scene, dancing all night, and then she has an injury or something that stops her from being so active, she may gain weight. Another reason could be a new hobby like baking goth - themed treats as I mentioned before. Also, a new relationship where her partner cooks a lot can lead to weight gain.