3 Nen B Gumi Kinpachi-sensei - Densetsu no Kyoudan ni Tate!

You can become the homeroom teacher of "Class 3-B" from the popular TV drama! You take care of 21 students from Class B in the 3rd year (including transfer students). The game progresses episode by episode like a television show, and resolve the worries and troubles of the students that occur each episode. And the story takes an unexpected turn... Will you be able to get your students to graduate safely? [Translated from official website]

During the 2004 school year at Sakura Junior High School, the famous teacher Kinpachi Sakamoto has been hospitalized. He will be unable to work for a full year so a substitute teacher is hired to teach his class while he is away. Kinpachi recommends the protagonist to take his place (an unnamed silent character) and so begins the player's one year journey as the teacher of 3rd Year Class B.