Read manga: 7 Jikan-me Rhapsody

manga
Summary:

Toudou Rinko is a serious and reliable class representative, now in 2nd year of high school. It happens that the first male person she starts to notice is her homeroom teacher, Saku Makoto. She ends up helping the nonchalant and playful teacher with his "Love Guidance Room".

Also included is Tanaka sensei's earlier 1998 work "Light Right Rabbit"
Usami is a high-school student who likes children. After an incident on a school trip, he plays with the children at their kindergarten. The children call him "Usagi" because of his magic trick. He also happens to be in love with one of the kindergarten teachers.