Takane and Hana

Both r jdramas and r so cute
Both r kinda contract relationship but eventually fall for each other

The girl in both stories is a high school student who went to a meeting instead of her older sister. When the switch is discovered by the male lead, he doesn't want to give up the relationship with the younger girl.

Both have the same dating style and story development.
Both male leads are working at a high ldvel of management position in their offices.
Plus both ML are good in showing two sides of their attitude

Both have. Very familiar feel. Rich older guy poor girl who is a student. They start off badly but gradually c9me to care for each other.

Both dramas feature a set-up of older successful male dating cute high-school girl with a reasonable age gap. In both dramas male chases female first.

“That gap is unfair~!”

Once a week, Mori Meiko begins working as an instructor at an announcing school. She manages to get through the unfamiliar classes thanks to her earnest student “Yukari-kun,” whose real name is Hayama Yukari.

Yukari-kun is soothing! A heart’s oasis, an adorable student! But outside of school, Yukari-kun has an unexpected side…?!

Cute yet mature, Yukari-kun’s overwhelming gap makes it impossible to look away! What will become of this slightly nerve-wracking romance between a younger instructor and an older student?!