Ohisama egao manga

Ohisama Egao summary:

Ohisama Egao is a collection of four stories showing the budding romances of three schoolgirls and one teacher - Aoi, Ryouko, Shizu, and Sawada-Sensei. While each story takes place during a different season, they are connected by the frienship of the characters. Though there may be difficulties on each of their paths, they will keep moving forward towards happiness.