Josou Shite Ojou-sama Gakkou ni Sennyuu Shiyou to Shitara, Machigaete Tonari no Teihen Danshikou ni Haitteshimatta Boku

Himetsubaki Haruki has a dream since he is a kid: to attend the prestigious Saikyoujou school where he could take lessons with the worldwide renowned designer Oosasa Kaoru and become a famous fashion artist!
His only problem, Saikyoujou Gakuen is an all-girls school.
Faking the uniform, he decided to attend but, on his way to the opening ceremony, he went to the wrong school! Here, it's the Saikyou Gakuen, an all-boys school full of delinquents and teacher in tracksuits!!

Oh, god, a teacher spotted him! W-Will he be all right??