If you're looking for manga similar to Tsuyogari (Kiyo FUJIWARA), you might like these titles.
A teacher at Kanae's school has been fired for having an affair with a student. Then, a hot new librarian comes in… Kanae falls in love with the new librarian. However, she sees a ring on his finger...?
Nao has fallen in love with her high school homeroom/PE teacher, Aragaki-sensei. He is handsome, kind, and fun. But she dare not tell him. Nao's home life is not good. She hates going home because her mother and sister are always fighting, and everything is a chaotic mess. She would rather be at school, admiring Aragaki-sensei. But when Nao faints one day from the heat and anemia, Aragaki-sensei helps her. Could this be the beginning of a forbidden relationship?
Kei is a quiet student who doesn't really like adults or teachers too much. However, after getting to know her English teacher, she begins to fall for him.
When Saki was in elementary school, she was dumped without notice by Chikage who was eight years her senior. She was extremely shocked because she believed that he would be her future husband! With a change of attitude, while at the high school entrance ceremony she decided that she dreamed of finding a new love, but at that time she met Chikage again, who has now become a teacher. As usual, she is shocked to realize that she still has feelings for Chikage. How does Chikage feel about Saki…?!
At the end of the second semester, a teacher came. Everybody in class quickly opened their hearts for the childlike adult, Jiro-chan. Kokoro knew that Sensei loved her because he asked her for help. However, Fuwa-kun, the one I love, hated Sensei.
As a child, Sasahara Tomo has always been "one of the guys," hanging out and rough-housing. Even though, she secretly wished to be a girl instead when she enters elementary school, she keeps her facade, too embarrassed to admit it. But when her love confession was later rejected because she didn't seem like a girl, Tomo was ready for a new start. And how lucky that she's about to enter high school. She's excited. A whole school where nobody knew her! But not quite. There's Shimazaki Akira, who had been her next-door neighbor until 5 years ago.. and it seems as if their "sibling" regard for each other is growing into something more.. But there are problems aboard.. because this is a forbidden love.. because he is her 23-year-old class advisor.
After being broken-hearted 3 times, in Kozue's mind, she no longer needed men anymore. But she unconsciously started to care about this mature and considerate Asano-sensei. After knowing Asano-sensei cherished and loved his girlfriend so much, she then discovered that she fell deeply in love with Asano-sensei... Even though being rejected by the teacher, But Kozue still couldn't forget her love and the romance for the teacher......!?