Any manga like these ones?

You can try Mahou Sensei Negima ~

Ten-year-old prodigy Negi Springfield, has just graduated from magic academy. He dreams of becoming a master wizard. Instead he's sent to Japan to teach English...at an all-girls high school! All the students are delighted with their cute new teacher--except for Asuna, who resents Negi for replacing the teacher she secretly has a crush on. Although he is forbidden to display his magical powers, sometimes Negi can't resist. And when Asuna discovers Negi's secret, she vows to make his life as difficult as possible—just the thing to prepare Negi for the challenges of life as a master wizard!

Or Ouran High School Host Club:

One day, Haruhi, a scholarship student at exclusive Ouran High School, breaks an $80,000 vase that belongs to the "Host Club", a mysterious campus group consisting of six super-rich (and gorgeous) guys. To pay back the damages, she is forced to work for the club, and it's there that she discovers just how wealthy the boys are and how different they are from everybody else.

hmm... there are alot of good ones. You don't want one that is too long. I'm not sure how long is too long for you but off the top of my head maybe you would like hana to akuma, special a, skip beat or kaichou wo maid-sama. If you're at all into manwha, boy of the female wolf is good. If you want more feel free to ask again.

Why don't you just read recommendations on myaninelist.net

It will explain the manga too.

Try shinobi life or mahou sensei negima

ouran highschool host club