Gakuen Ouji

A girl and her boyfriend of one month plan to go on an overnight trip to a spring, and she expects that "it" will happen but... -- Manga Updates

From Chibi Manga: Ikenai Kiss O Shiyou She fell in love with an extremely handsome mysterious man. He turns out to be a trainee teacher?! Kinkyori Renai ~Bangaihen A secret romance between teacher and student. The only person who can take off his glasses is me. Pink No Idenshi Hanamitsu Shounen She saw her Chemistry teacher Fugiki Sensei kissing a married teacher in the music room and the heroic battle begins! Ecchii Houkago Kiken Na Katekyou The extremely “popular” tutor is here to teach Yu but...?! Mi Da Ra Choukyou Yu-Sensei came as a tutor. I’ll do what ever it takes for him to fall for me!

Taken from Baka-updates: A girl gets impatient when she and her boyfriend haven't kissed yet, even though they've been dating for awhile, so she tries to take matters into her own hands. Also, there's a oneshot after this about a girl with a similar pro

Plot: Ikenai Kiss O Shiyou She fell in love with an extremely handsome mysterious man. He turns out to be a trainee teacher?! Kinkyori Renai ~Bangaihen A secret romance between teacher and student. The only person who can take off his glasses is me. Pink No Idenshi Hanamitsu Shounen She saw her Chemistry teacher Fugiki Sensei kissing a married teacher in the music room and the heroic battle begins! Ecchii Houkago Kiken Na Katekyou The extremely “popular” tutor is here to teach Yu but...?! Mi Da Ra Choukyou Yu-Sensei came as a tutor. I’ll do what ever it takes for him to fall for me! This is one of 8 (as of 8/31/10) Genshaku Tsundere Danshi Anthology books: 1/2) Genshoku Tsundere Danshi Oresama Cool (3/13/2009) 1/2) Genshoku Tsundere Danshi Oresama Sweet (3/13/2009) 3/4) Gensoku Tsundere Danshi Ikenai Sensei (8/10/2009) 3/4) Genshaku Tsundere Danshi Semekare (8/10/2009) 5) Genshoku Tsundere Danshi Moekare (12/11/2009) 6/7) Genshoku Tsundere Danshi Himitsu no Kareshi (4/13/2010) 6/7) Genshoku Tsundere Danshi Junjou Kareshi (4/13/2010) 8) Genshoku Tsundere Danshi Ubukawa Kareshi (8/11/2010)