Terao: The Next Generation Machine

Ishihara is a new teacher who grew up in the city and is a gaming enthusiast. He is transferred to a rural school on a southern island 25 hours away by boat! On top of that there's a weird robot among the students. Blue sky and sea, with the energetic children, the village chief who is proud of his strength, and a female doctor rumored to be a beauty. Surrounded by nature and the islanders with unique personalities, a clumsy teacher's exciting daily life begins!

(Source: Enterbrain, translated)