Happy☆Margaret!

Chiaki and his old friend Inaho were ordinary high school students. They lived an ordinary and peaceful life until they meet with a maid on their way from school. "I'm Sakura. Nice to meet you." She said and somehow they lost consciousness. When Chiaki woke up, he found himself in a strange place, alone. Soon he learned that this place was an academy of sorts and he was accepted as a student. What will become of him in this strange place and what happened to his childhood friend Inaho? [Translated from Getchu]