
If you're looking for manga similar to Kuromajo-san ga Tooru!!, you might like these titles.
Miho Shinohara is a typical 9-year-old who is fascinated with showbiz and dreams of stardom. One day she meets a stranger who gives her 2 dolls, who later reveal themselves as magical dinosaurs named Pigu and Megu! They give her the special ability to draw clothing on a special drawing pad and turn it into reality, as well as transform her body into a teenager’s. One day, by chance, she is spotted by the president of a talent agency, Lyrical Productions. She lands her first job as a model, hence taking her first step into showbiz; but the road to stardom is still long and challenging. Can she, disguised as Lala, become an idol?
Chocolat is an extrovert and an assertive girl, while her friend Vanilla is extremely shy and hesitant; together, they both come from the Magical Kingdom and are the next candidates in line for the throne. In order to qualify to be the Queen, Chocolat and Vanilla are sent to the Human World to improve their magic; the assessment is based on capturing the most 'hearts' of the people in the Human World. Chocolat's upfront behavior was popular in the Magical Kingdom, but in the Human World, people prefer the personality of her newly formed rival, Vanilla. Now, Chocolat must work extra hard to live up to her mother's failure -- all while repressing her desire to whup everyone's butt!
Creamy Mami is about a young girl, Yuu, who after seeing a spaceship is given the power to use magic for one year. She is also given 2 cats, Poji and Nega, to watch over and guide her. Using her magic powers to transform into the idol Creamy Mami, Yuu must work hard at acting, singing, helping her parents at their crepe shop, fighting aliens and bad guys, going to school, plus try to get the affections of her childhood friend Toshio.
Hinamori Amu is a stylish punk rock girl who is liked and feared by her peers, but there's just one problem: she's actually a shy and quiet girl who can't seem to drop her self-fabricated facade! But when Amu finds three eggs in her bed, she had no idea her life would change forever. Out of the eggs pop Ran, Miki and Su, Amu's Guardian Charas; these being represent parts of Amu that she wishes she could be, even allowing Amu to transform into those parts at will! Now, with pressure from the other Guardians (including her crush, Hotori) to join their midst, dark sides of the psyche known as X Eggs to seal, and nefarious forces after a wish-granting egg known as the embryo, Amu's life has officially become more complicated!
Junior high student Mitama suddenly got chosen as a Magical Girl! As a result, The Great Demon King Jeddo's plan of bringing despair to the Earth got stopped in a mere 12 pages! However, this was only the beginning of their legendary everyday life where a Magical Girl and a Demon King live under the same roof!
High school freshman, Aoi Rio, has a secret that can't be told to anyone. He actually watches "Magical Girls" anime! On his way back home after secretly buying anime merchandise as usual, he saves a girl named Sumire who fell from the sky. Sumire is disheartened because she believes her powers are not good enough. After Aoi encourages her by explaining the value of Magical Girls, Sumire asks him to become her Magical Girl instructor!
Japan has been invaded by aliens - but this is no ordinary assault. These extraterrestrials are cute and extremely dangerous. Their mind-blowing powers are way too much for the military. Enter Mao-chan, the daughter of a great general, and her charming best friends - Japan's only hope against this massive attack of the adorables!
Momo loves ribbons, the colour pink, and many other things which better suit girls with delicate figures. Yukino, his best friend, was his only support and was also the only person he could enjoy cute things with but even their relationship had broken down... While Momo was in the depths of despair, a voice whispers in his ears... "Shall I grant your wish? If you are willing to fight in this world then I will turn you into a girl."