From Aerandria Scans:

Tezuka Ayane was aiming to become a pianist. She was also working as a part-time home-tutor when she met Narumiya Kou. She found herself falling for him, but there was a difference in their ages and her feelings didn’t seem to be returned. Six years have passed since then and Ayane is a music teacher in an all-girls school. One day, she goes to a jazz-piano audition and meets Kou there..!

From Lovers Dream:

Touko Momozono is a bright and eager shitamachi girl. She lives with an unwed mother and grandmother, all-female household. Her father had already gone when she was born, but she lived in comfort. Only there was a gaping hole opened in her heart. Recently she has often been an easy target for molsters and thugs, and Kazunari, who is usually boring and one of her colleagues, helps her ride out such a crisis. What is hidden behind his face? Why is she a target for a suspicious-looking man?

Contains 5 stories: 1. ...Curtain. Living purely together with Sensei: Hiyori Okamura is a new mathematics teacher at a high school she graduated from. She still loves Shibasaki, a chemistry teacher who she loved as a student. One day, it happened that Hiyori couldn't use her room, so she moved to Shibasaki's room in the same apartment house, and began to live there. A curtain divided the room in two, and Hiyori and Shibasaki...!? 2. Love Duet: Honda Ema works with and is attracted towards Sawaki Koutaro. Honda plays the Piano and is taught by Sawakis little sister. But due to an accident Sawaki will be teaching her. 3. Sweet days for you, too 4. Impassioned Drawing 5. Entreaty Guidance