Synopsis: Sensei wa Yasashii Yajuu. ~Otona no imi, Oshiete?~

Our Teacher, the Gentle Beast -Tell Me What It Means to Be an Adult- / 先生は優しい野獣。～オトナの意味、教えて？～ He asks her if it feels good. That's when her teacher runs his tongue across her body... Kyousuke is a childhood friend of Aya's, who she has loved ever since she was a child. Now, he is a teacher at her school. Aya thought that Kyousuke was the same as always, until she finds herself in an empty classroom with him, and he starts to gently rub her body and slide his tongue across her neck. Aya's body gets hotter until she can no longer control herself. That once sweet teacher has become a beast. How will Aya be able to focus on her school life now? from Renta!