Original version: Lots of bishies with one girl. Seems to have something to do with the Chinese zodiac at an elite school.
Serious version: Igarashi Yuna is a transfer student in St. Louis High. Based on an otome game of the same name. This manga covers each of the guy's routes in each chapter.
In the series:
V.1 - Storm Lover
V.2 - Natsukoi!!
