If you're looking for manga similar to Sasami 14: Mahou Shoujo Pretty Sammy, you might like these titles.
Sakazaki Riko, age 31 and also known as Magic Girl Collie, is lonely. Ever since she was a child, she used her magical powers of being able to turn into an adult to help people and solve cases. It has been decades since she started and Riko is now 31 years old and single. The one magic power she had is now useless as she's already a grown up. Find out what happens to a witch after her prime who goes off to search for someone special.
Five middle school-aged girls are chosen by a fairy puppy to form a team of magical girls known as the "Shiny Cheers". But one of them, Namami Hitori, has a secret that could shake the world...?!
After once being very popular in her generation, the magical girl Klan mysteriously vanished. But after 7 years, she has finally returned! Not just her height, but her attitude and even her breasts have gotten bigger! Watch her battle as her voluptous body is literally bursting out of her clothes!
I met a Mahou Shoujo; and so began my story. "Then I will become a Mahou Shoujo!" In order to save Hoshi Karen, the Mahou Shoujo who had protected her even while being pursued by tanks. Kokone, who was entrusted with Karen's Grimoire, decides to become that which is acknowledged as a "Calamity" by the world... a Mahou Shoujo!
If Madoka Kaname had known of the tragic transformation that would mark the end of her magical-girl journey, how would her story have unfolded? In this telling of her story, Madoka remembers the outcomes of her previous timelines—but so does Kyubey. Even with the knowledge of her previous lives, can Madoka outmaneuver Kyubey and avoid her fate?