When it was a ribbon (1st volume 1)

Publisher: Shogakukan
Author: Princess Kyomachi
Size: 112mm x 174mm
Number of books: 1
Language: Japanese
Category: Girl manga, manga
Latest release date: 2015-06-26

Synopsis:
The person who fell in love, 17 years old, was a teacher-
Ako who has never fallen in love.
Nevertheless, it seems that a boy I met at the first joint party will suddenly be brought to the hotel!
Ako fell in love in an instant to an adult man who helped Ako, a big pinch.
He reunited with him at school, but he was an Ako's school teacher ...!?
Sweet, dear, forbidden pure love story.