Update: the manga includes cross dressing

This is a manga that was still in progress a few years ago, but I can't remember the name anymore. I believe it was a shoujo manga but I can't be 100% sure.

The main character was studying at an elite school for rich kids/girls, but then her family loses their money so she attends a rougher school nearby. She is a smart student and ends up in a special class (I think).

There is a well known student whose goes by either Hana or Aoi. The main character initially thinks Hana is a girl but they are really the principal's son. Hana/Aoi is a very vain character but tends to help the MC a lot.

At one point in the manga the MC and their class is playing hide and go seek in the city. During this time MC runs into some of her former classmates. The former classmates start to make fun of one of MC's current classmates, who I think is holding a frog stuffed animal? Hana/Aoi steps in to confront the rich kids. The frog girl apologizes to MC for embarrassing her but the MC gets realizes that her classmates shouldn't have to apologize for being themselves.

Where I left off in the manga was the MC was beginning to realize that maybe they like Hana/Aoi, but is unsure about it.

If anyone knows what this series is, please let me know. Thanks for taking the time to read this!

Shouri no Akuma

~4400 manga completed
~1700 ongoing...

You are amazing! Thank you so much for helping me find it!