Alternative Name:"Ano Toki Tasukete Itadaita Monster Musume desu": Isekai Ossan Kyoushi Totsuzen no Moteki ni Konwaku suru; Con quái vật mà tôi dạy dỗ năm xưa đã hóa thành một thiếu nữ xinh đẹp và đến gặp tôi; The Girl Monster I Saved; 「あのとき助けていただいたモンスター娘です。」異世界おっさん教師 突然のモテ期に困惑する; あのとき助けていただいたモンスター娘です。; 那个时候被你拯救了的那个魔物娘是我的说。

Genre(s): Ecchi Fantasy Harem Romance School LifeComedy

Demographic:Shounen

Summary:
Some 20 years have passed since the protagonist was summoned to another world and retired from the army. He is still single in his 40s and lives as a ... MORE Some 20 years have passed since the protagonist was summoned to another world and retired from the army. He is still single in his 40s and lives as a low-ranking professor, until one day, an elite 'monster girl' transfers into his class. HIDE