クラス召喚に巻き込まれた教師、外れスキルで機械少女を修理する (Associated Names)

Aizawa Seiji, an ordinary teacher, finds himself transported to another world with his entire class. In that other world, demon kings are running amok and “the power of young and brave warriors” is needed to subjugate them. However Seiji is 28 years old, so he cannot be considered as a “young and brave warrior” and…