what's the name of this anime?

[Itachi75]

do any of you remember the name of a anime that features a girl that enters a high school, but everyone thinks she is a boy becuase she had to disquise herself as one(i believe that is)
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I know it is a comedy, and possibly a ecchi-comedy.
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I will be very grateful if you can help me out i just remember a bit of the trailer and that is it lol

 

[Clouds]

Ouran high school host club? ._.

 

[GenKiDama]

Complete guess saying infinite srratos, but she wasnt the main character

 

[China IL]

Ouran high school host club? ._.

Ikr

Is the school pink?

Heres the characters

Spoiler

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