Kanpeki Onee-sama Mikogami Saya no Mujintou Haramase Shugyou | 完璧お姉さま御子神沙耶の無人島孕ませ修行

Protagonist Yosuke Ikeda was reminded of his own shortcomings in the daily presence of cool-headed, talented, universally popular lady Saya Mikogami. She saw him being humiliated for his lewd tendencies and decided to fix him up by taking a private holiday to an uninhabited island. At the same time as they trained Yosuke and Saya became lovers, as she showed him the ways of sexual discipline... a splendid baby-making life with the cool, perfect older girl!