https://www.dmm.co.jp/dc/doujin/-/detail/=/cid=d_621858/

[Synopsis]

One night on my way home after working overtime, I happen to come across my two problematic student who are sisters being hit on and I, a teacher, rush to help them.
"Teacher, what a coincidence we've met in a place like this~♪"
The older gyaru sister calls out to me in her usual playful manner, while the younger sister, who is more of a downer, calmly observes the situation.
When I try to contact their parents, the older gyaru sister desperately tries to stop me.
"I have a favor to ask of you, teacher...!"
It's probably just the usual excuse, I thought.
But then I heard one unexpected word from the younger sister.
"Teacher, please listen."
After hearing her story, I had no choice but to invite her over to my house for protection but this was the beginning of everything...

Base +28, nuts987 +14