Soshite Watashi wa Sensei ni... 4

It's been a long time, sensei. Nao was enjoying being shut-in in the shadow of her doting younger sister, but when she heard her sister's obscene gasps leaking out of the door, she found her way to Giri Papa... The person I once studied with for a moment, we hit it off as mutual admiration, but it was fleeting and gone... I am disappointed in you, and I will not let you touch my sister from now on! She was a NEET sister trying to protect her sister, but she was just a little prey to Giri Papa... The fact that the hated teacher had not only made a mother-daughter bowl, but also a sisters bowl, was a real shock for the naughty gals!